#help-42

1 messages · Page 4 of 1

calm coralBOT
#

@clever thorn Has your question been resolved?

clever thorn
#

<@&286206848099549185>

remote mural
#

“Explain why the angles are congruent” why are do they both measure to the same measurements

clever thorn
#

so like a rectangle has 4 90* angles, because of this if you fold then you create 2 supplementary angles that are therefore congruent

#

idk

remote mural
#

I personally would say that’s a good response

#

But I’d personally say
“A rectangle has four 90 degree angles so therefore when you create two supplementary angles, it causes the angles to be congruent”

#

I hope you understand it now 🤔🤷‍♂️

calm coralBOT
#

@clever thorn Has your question been resolved?

clever thorn
#

sorry for the late response

calm coralBOT
#
Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

calm coralBOT
#
Available help channel!

Send your question here to claim the channel.

Remember:
Ask your math question in a clear, concise manner.
Show your work, and if possible, explain where you are stuck.
After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

devout wedge
#

Ive tried looking up examples and looking at info videos for help I just really dont understand this

severe scarab
#

angle 2 and angle 7 are congruent

#

so you can set them equal to each other

#

2x+33=4x-70

devout wedge
#

I know they have to equal to 180 together

#

but I dont know how to actually do the math

severe scarab
#

you mean the algebra?

devout wedge
#

yea

severe scarab
#

so you want to have all your variables (the x's) on one side

#

to do that I will subtract 33 from the left side of the equation

devout wedge
#

ok ima do this in microsoft paint real quick

severe scarab
#

actually adding 70 is much more easier

#

you add 70 to both sides

#

-70 on the right cancels out

devout wedge
#

so 103 right

severe scarab
#

correct

devout wedge
#

so 2x+103

severe scarab
#

equals 4x

#

subtract 2x from both sides

#

and that leaves you with 103=2x

devout wedge
#

oh equals my bad

#

then you divide

severe scarab
#

yes

devout wedge
#

51.5

severe scarab
#

yep

#

than you want to substitute the answer to x

devout wedge
#

but if both sides have to add up to 180 would that make my awnser 128.5?

severe scarab
#

gimme one sec please

devout wedge
#

sounds good

severe scarab
#

hmm this is weird cause 51.5 is the right answer

devout wedge
#

can the answer even be a decimal

severe scarab
#

no but you have to substitute it

#

so 2(51.5)+33

#

which equals 136

devout wedge
#

so that's the answer?

severe scarab
#

if i'm not mistaken then yes

devout wedge
#

alright apreciate it

severe scarab
#

yeah np

devout wedge
#

thats all the help I needed

#

so how do I close this?

tacit linden
#

".close"

#

good luck on da adventure of algebra

devout wedge
#

.close

calm coralBOT
#
Channel closed

Closed by @devout wedge

Use .reopen if this was a mistake.

calm coralBOT
#
Available help channel!

Send your question here to claim the channel.

Remember:
Ask your math question in a clear, concise manner.
Show your work, and if possible, explain where you are stuck.
After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

remote mural
#

Is it possible to add the sin functions to make one sin function and then use that to find the period?

calm coralBOT
#

@remote mural Has your question been resolved?

calm coralBOT
#
Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

#
Available help channel!

Send your question here to claim the channel.

Remember:
Ask your math question in a clear, concise manner.
Show your work, and if possible, explain where you are stuck.
After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

#
Channel closed

Closed due to the original message being deleted

calm coralBOT
#
Available help channel!

Send your question here to claim the channel.

Remember:
Ask your math question in a clear, concise manner.
Show your work, and if possible, explain where you are stuck.
After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

calm folio
#

I'm not sure about how to properly say this in english, but I'm trying to find the implicit derivative of something, and I'm wondering when finding the derivative of sin(x^2y) if thats cos(x^2y)(2x*y') or if you have to use the product rule to find the derivative of the core first

hollow totem
#

u do chain rule first since it's the outermost part

#

but after that you need product rule to get (x^2y)'

calm folio
#

but using the chain rule, dont I have to use the product rule? Or do I not because its 2 diffrent variables even though they are connected

hollow totem
#

since neither x^2 or y is constant

calm folio
#

so then it would be cos(x^2y)(2xy+x^2y')?

hollow totem
#

yeah

calm folio
#

alright thanks

#

do you know if theres a tool to calculate a long implicit derivation? its so long that Im sure to have some stupid mistakes and would be nice to check if I got it right

#

I tried some but they gave some really long answers even though I know its supposed to be simpler

#

for refrence I want to find y''(0) of ln(1+2y)+sin(x^2y)=2

hollow totem
#

1 sec

#

not one in particular that I know of

#

You could graph the graph using desmos

#

and look at what you think the slope (y') is

#

and if it matches

calm folio
#

Im pretty sure I just have to find an expression for y'' that will contain x y and y' and then put in y(0), y'(0) and x=0 but yeah the problem is that its such a long solution for the y''

hollow totem
#

ah yeah that makes sense

#

there's probably some online calculator that can do it

#

if you haven't searched for one worth a try

calm folio
#

I wonder, can I put in values for y and y' as I go? or do I have to get the proper expression for y'' first

#

I tried a few but didnt really get it to work 😅 but I'll try a bit more

hollow totem
#

,w second derivative of y^2+xy+x^2 = 0

potent lotusBOT
hollow totem
#

hmm

#

,w implicitly derive y^2+xy+x^2 = 0

potent lotusBOT
hollow totem
#

symbolab might have something too

#

,w implicitly 2nd derive y^2+xy+x^2 = 0

potent lotusBOT
calm folio
#

alright, thank you for helping 😄

hollow totem
#

Oof

#

Np

calm folio
#

.close

calm coralBOT
#
Channel closed

Closed by @calm folio

Use .reopen if this was a mistake.

calm coralBOT
#
Available help channel!

Send your question here to claim the channel.

Remember:
Ask your math question in a clear, concise manner.
Show your work, and if possible, explain where you are stuck.
After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

weak grail
#

can you find both a and b in the pythagorean given only c?

jaunty sigil
#

apply toa cah soh when appropriate

weak grail
#

no angle

#

impossible right?

#

unless maybe your given perfect square?

#

like in a 3,4,5

#

ok, only given 90 degrees, how would i do it

carmine sorrel
#

even then, there are lots of right triangles with hypotenuse length 5

weak grail
#

true ig

#

had a programming test today that said to make a code to do this

carmine sorrel
#

without any other information (are they integers?), you'd at best, have a solution set of possible choices that would end up being part of a circle

weak grail
#

i think they are integers

#

c is an integer yes

#

so is a and b

carmine sorrel
#

then yes, you should be able to do this without any other information.... i think

weak grail
#

im thinking

#

if you are given a perfect square for c, then the a and b must also be perfect squares

#

??

carmine sorrel
#

if everything is an integer, the only solutions would be pythagorean triples.
Given C, you can identify which triple.

carmine sorrel
weak grail
#

so there's an equation for it?

#

confused

#

my brain 😕

carmine sorrel
#

A Pythagorean triple consists of three positive integers a, b, and c, such that a2 + b2 = c2. Such a triple is commonly written (a, b, c), and a well-known example is (3, 4, 5). If (a, b, c) is a Pythagorean triple, then so is (ka, kb, kc) for any positive integer k. A primitive Pythagorean triple is one in which a, b and c are coprime (that is,...

#

first section is how to generate a triple

weak grail
#

hm

#

euclid's formula?

calm coralBOT
#

@weak grail Has your question been resolved?

weak grail
#

if i need an equation to figure out a and b, given c, what would i write

calm coralBOT
#

@weak grail Has your question been resolved?

#
Channel closed

Closed by @weak grail

Use .reopen if this was a mistake.

calm coralBOT
#
Available help channel!

Send your question here to claim the channel.

Remember:
Ask your math question in a clear, concise manner.
Show your work, and if possible, explain where you are stuck.
After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

quiet folio
calm coralBOT
#

Please don't occupy multiple help channels.

rare tiger
#

Write 2 equations at t=0 and t=3 given the information you have in the question

#

After that we can find a and k

#

@quiet folio

calm coralBOT
#

@quiet folio Has your question been resolved?

calm coralBOT
#
Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

calm coralBOT
#
Available help channel!

Send your question here to claim the channel.

Remember:
Ask your math question in a clear, concise manner.
Show your work, and if possible, explain where you are stuck.
After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

pliant fern
#

Hi can someone help me to find my mistake here?

pliant fern
#

Answer should be 13/3, but I’m keep getting. 11/3

vernal plaza
#

g’(x) isn’t right

#

forgot to differentiate the inside

#

of the bracket

pliant fern
#

g’(x) =1?

vernal plaza
#

you let g(x) = $\sqrt{2x+1}$

potent lotusBOT
#

duckiescute!

vernal plaza
#

so g’(x) = $\frac{1}{2}(2x+1)^{-\frac12}(2)$

potent lotusBOT
#

duckiescute!

vernal plaza
#

so you left with (2x+1)^(-1/2) for g’x

pliant fern
#

Where does last 2 came from?

vernal plaza
#

differentiate 2x+1

#

chain rule

pliant fern
#

Ohh like this?

vernal plaza
#

technically yes

#

just that I didn’t substitute anything for 2x+1 hahah

pliant fern
#

So, first, different the y=u blah blah blah, the times with u ‘ at the end

#

*then times

vernal plaza
#

yes

#

or as I like to put it

#

diff outside then the inside

pliant fern
#

Ohhhh

#

I got it

vernal plaza
#

yay!

pliant fern
#

Really appreciate for ur help

vernal plaza
#

no prob!

pliant fern
#

.close

calm coralBOT
#
Channel closed

Closed by @pliant fern

Use .reopen if this was a mistake.

calm coralBOT
#
Available help channel!

Send your question here to claim the channel.

Remember:
Ask your math question in a clear, concise manner.
Show your work, and if possible, explain where you are stuck.
After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

pliant fern
#

Can someone help me to find my mistake here?

pliant fern
#

Until the 4th line, I’m correct, but when I sub (3, 29/4) in, something wrong with my c value

#

Pls, I can’t use calculator here

winter hazel
#

,calc 2/3(9^(3/2))

potent lotusBOT
#

Result:

18
winter hazel
#

,calc 29-72+9+18

potent lotusBOT
#

Result:

-16
winter hazel
#

ye

#

i think u just moved stuff wrongly

#

this is right

#

just recalc it

pliant fern
#

Okay

winter hazel
#

u shld get c=-4

pliant fern
#

Yes, I got it

#

Thanks

#

.close

calm coralBOT
#
Channel closed

Closed by @pliant fern

Use .reopen if this was a mistake.

winter hazel
#

np

calm coralBOT
#
Available help channel!

Send your question here to claim the channel.

Remember:
Ask your math question in a clear, concise manner.
Show your work, and if possible, explain where you are stuck.
After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

solar spruce
#

i have to show for a finite $S\subset\mathbb{Q}$, $\langle S\rangle$ is cyclic. i believe that $\langle\text{GCF}(S)\rangle = \langle S\rangle$. is my intuition correct, and is this that the right approach?

potent lotusBOT
#

maximo

velvet osprey
#

sure, so long as you define what GCF means for a finite subset of Q

solar spruce
#

is there a better approach

#

it feels like im getting too complicated with it

ancient wren
#

maybe think of whether all your elements can be obtained from 1?

#

actually this prob devolves into the same argument as yours

calm coralBOT
#

@solar spruce Has your question been resolved?

solar spruce
#

hm maybe i can show it's isomorphic to some subgroup of Z

#

or just isomorphic to Z at that point

#

the isomorphism should be something like phi(a) = LCM(denominators of S) * a. i think im back to the same thing with LCMs now instead of GCFs

solar spruce
#

hm ok i have something going here i think

#

let $d:\mathbb{Q}\to\mathbb{Z},, d(\frac{p}{q})=|q|$, and $q\overset{def}=\prod_{s\in S}d(s)$. \
now let $\phi:S \to \mathbb{Z},,\phi(s)=qs$. $\phi$ is well defined since we multiply by at least the denominator of every $s\in S$.\
$\phi$ is a bijection, and $\phi(s_1 + s_2) = q(s_1 + s_2) = qs_1 + qs_2 = \phi(s_1) + \phi(s_2)$\
i guess all that's left to do is to show $\phi:\langle S\rangle\to c\mathbb{Z}$ is an isomorphism for some constant c, and we know $c\mathbb{Z}$ is itself cyclic

#

i think that makes sense, please let me know if it doesn't

potent lotusBOT
#

maximo

solar spruce
#

im so bad at using lcms gcds and stuff though. that last part definitely needs some playing around with those to find a suitable c

#

if it didn't show this is me trying to avoid using lcms and gcds at all costs lmao

calm coralBOT
#

@solar spruce Has your question been resolved?

solar spruce
#

ok so for this to work i need to somehow show $\psi:\langle S\rangle\to\mathbb{Z},,\psi(s)=qs$ is well defined.\
my idea is to let $s' = \frac{1}{q}$, $q$ as defined above. then clearly $\langle S\rangle\le \langle s'\rangle$ since every $s\in S$ is a multiple of $s'$.\
so finally, since $qs'=1,\psi(s) = qs=q(cs')\in\mathbb{Z},\forall s\in\langle S\rangle$\
thus $\psi$ is well defined, a bijection, preserves group operations, and so is an isomorphism

potent lotusBOT
#

maximo

solar spruce
#

god what a terrible proof

#

i don't even know if it works

#

aaaahhhhhh its not an isomoprhism to Z but to cZ for some c in N

solar spruce
#

.close

calm coralBOT
#
Channel closed

Closed by @solar spruce

Use .reopen if this was a mistake.

calm coralBOT
#
Available help channel!

Send your question here to claim the channel.

Remember:
Ask your math question in a clear, concise manner.
Show your work, and if possible, explain where you are stuck.
After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

remote mural
#

I would like to ask how tanx derivative is sinx/cosx?

remote mural
#

I'm a bit confused

fleet peak
#

theyre not saying that

#

all theyre saying is $\tan x = \frac{\sin x}{\cos x}$

potent lotusBOT
#

ohNoiAmHere

fleet peak
#

so that they can use integration by parts

#

notice that its still being integrated

remote mural
#

I see. Thanks

#

.close

calm coralBOT
#
Channel closed

Closed by @celest shore

Use .reopen if this was a mistake.

calm coralBOT
#
Available help channel!

Send your question here to claim the channel.

Remember:
Ask your math question in a clear, concise manner.
Show your work, and if possible, explain where you are stuck.
After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

hollow hamlet
#

i dont understand how to simplify this can you explain as well

dim ibex
#

Well to start

#

You can see that 6*5^k and 5^k share common factors so they can be simplified

#

and then there also the -6 ... +5

hollow hamlet
#

so get like terms together

#

6*5^k-5^k-6+5

#

6*5^k-5^k-1

#

then im confused here

dim ibex
#

yeah, but see that 6*5^k-5^k can be simplified

#

you can take 5^k out as a factor

#

to get 5^k (6-1)

hollow hamlet
#

where does the -1 come from sorry

#

so it would come out 5^k(6-1)

#

5^k*5

#

w exponential rule

#

5^k+1

#

.close

calm coralBOT
#
Channel closed

Closed by @hollow hamlet

Use .reopen if this was a mistake.

#
Available help channel!

Send your question here to claim the channel.

Remember:
Ask your math question in a clear, concise manner.
Show your work, and if possible, explain where you are stuck.
After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

flint mist
#

I dont understand what it means by reflect on y = -1

manic mist
#

but this time, instead of y axis, its the line y=1

flint mist
#

so if y = -1

#

its gonna be -9^x-1?

#

Like this?

#

-9^x-2*

#

.close

calm coralBOT
#
Channel closed

Closed by @flint mist

Use .reopen if this was a mistake.

#
Available help channel!

Send your question here to claim the channel.

Remember:
Ask your math question in a clear, concise manner.
Show your work, and if possible, explain where you are stuck.
After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

limber delta
#

you're creating a new password for your sachool email, your passsword must be 8 letters long. You can use uppercase letter, lowercase letter, or numbers as part of your password. Because you're not very savvy about password security, you decide to include the 4 didgit of your birth year and your 4 favourite alphabets, to be arranged in any order. How many different passwords are possible that dont start with a 0 or end with a 0

limber delta
#

my birth year is 2005 and 4 favourite alphabets are H R W S

#

useful for the question

fierce mulch
#

So you can only use the letters h,r,w,s and numbers 2,0,0, 5 and use each once ?

limber delta
#

yeah

#

but it cant start or end with 0

fierce mulch
#

How many options are there for character 0

limber delta
#

8-2

#

6

fierce mulch
#

6

#

Yeg good

#

Character 1

limber delta
#

but that 6 can be in any place

#

i mean 6 places

limber delta
fierce mulch
#

Yep

fierce mulch
limber delta
#

that 0 can be in 6 places

#

is what i meant

#

so would it be 8C6?

fierce mulch
#

I’ve never seen it done like this

#

Umm

#

I guess you can do it like that

limber delta
#

combinations adn permutations?

#

we are supposed to use that

#

are you there?

#

<@&286206848099549185>

fierce mulch
#

I was just having a think I don’t think I can help you W this cause the way I’d go about it is different sorry

limber delta
#

its okay no worries

manic mist
limber delta
#

hello again! @manic mist

#

so to arange 8 letters and digits you could do 8C1 x 7C1 x 6C1 x 5C1 x 4C1...

manic mist
#

Cause xC1 is just x

limber delta
#

yeah so in permutation would be 8P1?

#

how would you write in P

manic mist
#

Idrk you can ask someone else if they write permutations like that, but yes, just 8 x 7 x 6… x 1

limber delta
#

8P8

#

okay

#

i got that

manic mist
#

Ok I gtg, hopefully you can solve the rest. Sorry 🙁

limber delta
#

its okay i'll tey

#

try

#

thanks for the help

manic mist
#

Nvm I just realized how inefficient my way was

#

Find someone else, if not, I’ll be back in a few hours and can explain

limber delta
#

okay

#

dm me when ur back

calm coralBOT
#

@limber delta Has your question been resolved?

#
Channel closed

Closed by @limber delta

Use .reopen if this was a mistake.

calm coralBOT
#
Available help channel!

Send your question here to claim the channel.

Remember:
Ask your math question in a clear, concise manner.
Show your work, and if possible, explain where you are stuck.
After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

restive mason
calm coralBOT
thick pond
calm coralBOT
#

@restive mason Has your question been resolved?

#
Channel closed

Closed by @restive mason

Use .reopen if this was a mistake.

#
Available help channel!

Send your question here to claim the channel.

Remember:
Ask your math question in a clear, concise manner.
Show your work, and if possible, explain where you are stuck.
After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

sly python
#

Idk if this is how I'm supposed to ask for help but yeah I would like some lol

teal coral
#

since you're given the possible answer choices, the real thing here is just to plug them in

calm coralBOT
#

@sly python Has your question been resolved?

sly python
teal coral
#

you could use the cubic formula, but that's clearly not what they want

#

your best bet is probably Newton's method, which just locally linearizes the function

sly python
#

Thanks!

#

.close

calm coralBOT
#
Channel closed

Closed by @sly python

Use .reopen if this was a mistake.

#
Available help channel!

Send your question here to claim the channel.

Remember:
Ask your math question in a clear, concise manner.
Show your work, and if possible, explain where you are stuck.
After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

gaunt vortex
#

How would I answer a question like Mr Manku is preparing an acidic solution for his science class. He mixes a 25% acid solution and a 15% acid solution to get 100 mL of 19% acid solution. How much did he mix from each solution?

carmine sorrel
#

system of equations

gaunt vortex
#

What would the equations look like

carmine sorrel
#

that's a worked and explained example of a mixture problem just like yours

velvet osprey
#

the variables are the amounts of each available solution going into the mix, and the equations describe the total volume of the mixture and the volume of acid therein

gaunt vortex
#

Ight thanks for the answers

#

.close

calm coralBOT
#
Channel closed

Closed by @gaunt vortex

Use .reopen if this was a mistake.

#
Available help channel!

Send your question here to claim the channel.

Remember:
Ask your math question in a clear, concise manner.
Show your work, and if possible, explain where you are stuck.
After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

gaunt vortex
#

Adam invested $10000 into two accounts: one earning 8% interest and one earning 12% interest.
After one year, the 12% investment has earned $480 more than the 8% investment. How much was invested into each account?

gaunt vortex
#

How would I do this too

velvet osprey
#

you have two unknowns here

#

the amounts invested into each account

#

make a variable for each & convert the problem statement into equations

gaunt vortex
#

Can you show me how to do that?

velvet osprey
#

let x be the amount invested at 8% interest and let y be the amount invested at 12% interest, both in dollars

the total amount of money we invested into our two accounts is $10,000 therefore x + y = 10000

#

this is the variable declaration and one of the two equations

#

do you understand what has been written thus far?

gaunt vortex
#

Yes

velvet osprey
#

do you understand how to write down the other equation?

gaunt vortex
#

I don’t know what to do after the first part…

velvet osprey
#

the second sentence of the problem talks about interest

#

can you give an expression for the interest earned by the 8% account?

#

also please don't attempt to jump the gun and do more than what i ask you to!

gaunt vortex
#

I don’t understand the process I’m in grade 10 and missed a lesson

#

So…

velvet osprey
#

have you worked with the concept of interest before?

#

or perhaps percentages more generally?

gaunt vortex
#

Yes

velvet osprey
#

yes to both?

gaunt vortex
#

Percentages

velvet osprey
#

okay so if you meant "percentages but not interest" then why not say "I have worked with percentages in general but not with interest"?

#

anyway, ok

#

when we say that an account earns 8% interest, we mean that the amount of money in the account increases by 8% every year. that is, the amount by which it increases is equal to 8% of what you put into it.

there is a difference between simple interest and compound interest (namely whether the percentage is calculated from the current total or the initial deposit), but for our purposes it does not matter as the duration is only one year.

#

do you understand this?

gaunt vortex
#

Yes

velvet osprey
#

okay

#

then let's come back to the question i asked prior

#

can you give an expression for the interest earned by the 8% account?

gaunt vortex
#

No

velvet osprey
#

the interest earned by the 8% account is 8% of the amount invested into the account.

#

what letter did i use for the amount invested into the 8% account?

gaunt vortex
#

X

velvet osprey
#

lowercase x.

#

so what is 8% of the amount invested into this account?

gaunt vortex
#

.8x

velvet osprey
#

no

gaunt vortex
#

.08

velvet osprey
#

first off, never write decimals without the leading zero

#

so it's 0.08, not .08
and 0.8, not .8

gaunt vortex
#

Yeah mb

velvet osprey
#

that, unless you want to deliberately set yourself up for losing that decimal point

#

anyway, let's try this again

#

what is 8% of the amount invested into this account?

gaunt vortex
#

0.08x

velvet osprey
#

good.

#

now, in the same vein, what is the interest earned by the 12% account?

gaunt vortex
#

0.12y

velvet osprey
#

great

#

and now

the 12% investment earned $480 more interest than the 8% investment.

#

can you write this down as an equation?

gaunt vortex
#

0.08x+0.12y=480?

velvet osprey
#

no,

#

that would be "The two investments earned a total of $480 in interest"

#

which is not what is happening in your problem

gaunt vortex
#

So how would I write it down

velvet osprey
#

The interest earned by the 12% account is $480 greater than the interest earned by the 8% account.

gaunt vortex
#

Yeah but how would I write down the equation

velvet osprey
#

can you write down "A is 480 greater than B" as an equation?

#

with the letters A and B obviously

gaunt vortex
#

No

velvet osprey
#

A = B+480 no bueno?

gaunt vortex
#

0.12y=0.08x+480

velvet osprey
#

great

#

now you have a system of two equations

#

x + y = 10000
0.12y = 0.08x + 480

#

are you able to solve this system of equations for x and y?

gaunt vortex
#

I need to solve it by elimination

#

So would I move x to the other side

#

0.12–0.08=480

#

And then solve

#

Or no

velvet osprey
#

0.12–0.08=480
where'd this come from?

#

also, no, there are no instructions in the problem to use a specific solution method. you do not "need to" solve this system by elimination.

gaunt vortex
#

So how would I solve it

velvet osprey
#

well you could do it by elimination if you really wanted to

gaunt vortex
#

I learned substituting and eliminating

velvet osprey
#

substitution can work here too

#

i would suggest first multiplying both sides of the equation 0.12y = 0.08x + 480 by 25 to get rid of the fractions

#

i just think you should try something on your own instead of getting me to handhold you through the easy part of the problem

gaunt vortex
#

I’ve never done a substitution or elimination problem with an equation that has y and x on different sides

velvet osprey
#

well you can do some algebra to that equation such that the x and y don't appear on different sides anymore if you want

#

but for the purposes of substitution i don't think that will be super necessary

#

you do you though

gaunt vortex
#

Oh wait, x=10,000-y

#

And then I do the rest

#

Right

#

Nvm that wouldn’t work I think

velvet osprey
#

why do you think it wouldn't work?

#

it really sounds as if what's stopping you is less lack of algebraic fluency and more extreme hesitation

gaunt vortex
#

Wait I did something wrong

#

Ight now I know what to do I think

#

Ight I did it

#

And got x=3600 and y=6400

#

Thanks a lot for the help

#

.close

calm coralBOT
#
Channel closed

Closed by @gaunt vortex

Use .reopen if this was a mistake.

calm coralBOT
#
Available help channel!

Send your question here to claim the channel.

Remember:
Ask your math question in a clear, concise manner.
Show your work, and if possible, explain where you are stuck.
After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

remote mural
#

need help with statement

calm coralBOT
#

Please don't occupy multiple help channels.

alpine stone
#

Just post the question

remote mural
#

Determine the truth table of the logical value of the formula H:F1 <->F2 if F1:L(pvq) and F2:Lp(conjunction)Lq

#

i just dont understand how do u set up the table

#

with these

alpine stone
#

Just like you'd set up the table for any other logical value with given formula, just run though cases when p and q are both true and when one of them is true and the other is false and when both of them are false

remote mural
#

this is my problem

#

i dont understand how do u get these

alpine stone
#

Since the formula is F1 <-> F2, start with determining the values of F1 and F2 in each of the cases

remote mural
#

its harder for me to explain it to u

#

cause from different country

#

but i just dont get it like why is p true and why is q false

#

..

#

etc

alpine stone
#

We aren't saying that p is true and q is false

#

We are just considering all of the possible cases

#

T, T
T, F
F, T
F, F

remote mural
#

so

#

in all cases

#

p

#

stays t

#

and q t

#

in first collunm#

alpine stone
#

Yes

remote mural
#

alright

#

what about

#

pvq and f1?

alpine stone
#

pvq means "p or q", if you're having trouble with determining its value then use the table of it

#

TvT = T
TvF = T
FvT = T
FvF = F

remote mural
#

okay

#

im starting

#

to get it

#

i need to ask

#

what about second collum

#

how do u get that?

alpine stone
#

Btw how is L defined?

calm coralBOT
#

@remote mural Has your question been resolved?

remote mural
#

L

#

like

#

negationm

#

negation

alpine stone
#

Ah

#

So to determine F2, which is the same as Lp ∧ Lq

#

You first have to invert the values of p and q and then take their conjunction

#

Negation of T is F and negation of F is T

remote mural
#

like i meant for second collum

#

is it always t and f?

alpine stone
#

Ah

#

Well sometimes you may see t and f first and then f and t I think

#

But it doesn't really matter

remote mural
#

no like

#

if i get a question

#

like that

#

on my test

#

idk how to determine it

alpine stone
#

You are free to write tt tf ft and ff, yes

remote mural
#

it seems like that

#

cause there are

#

different

#

question where

#

in second collum or third

#

t is f

#

and otherwise

#

and its confusing to me

#

on how to get the other collum

alpine stone
#

It turned into f because negation of t is f

remote mural
#

ok i see

#

but in like for q

#

in second collum

#

its f

#

whr

#

where was it negated

alpine stone
#

Yes

#

q is t so Lq is f

remote mural
#

okay

#

that is clear

#

now

#

what about third collum

#

sorry for asking

#

i need to know this cause its kind hard

#

third collum how are p = f and q = t

calm coralBOT
#
Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

calm coralBOT
#
Available help channel!

Send your question here to claim the channel.

Remember:
Ask your math question in a clear, concise manner.
Show your work, and if possible, explain where you are stuck.
After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

modern kayak
#

please help

calm coralBOT
sturdy stratus
#

again?

modern kayak
#

yea sorry

#

im really not smart

sturdy stratus
#

Okay

#

This is harder.

modern kayak
#

yea im very confused

sturdy stratus
#

First, write what you have:
Julian: 10%
Anne: 10%
Richard: 10%
George: 7/25
Timmy: 1/10
Abi: 16

modern kayak
#

👍

#

done

sturdy stratus
#

Then you convert George and Timmy into percent.

modern kayak
#

Timmy - 1
George - ?

sturdy stratus
#

George: 7/25 = 28%
Timmy: 1/10 = 10%

modern kayak
#

ah alr

sturdy stratus
#

1/10 = 10% because 1 = 100%

modern kayak
#

oh yea that makes senes

sturdy stratus
#

Now, you add everyone except for Abi.

modern kayak
#

alr 1 sec

#

i got 68

sturdy stratus
#

10% + 10% + 10% + 28% + 10% = 68%

#

Yes

#

good

modern kayak
#

ty

sturdy stratus
#

That means that Abi got the remaining 32%

modern kayak
#

bet ty again ❤️

sturdy stratus
#

So how many percent is one points if Abi's 16 points are 32%?

sturdy stratus
#

Yes

#

And how many points did they score then?

modern kayak
#

100

sturdy stratus
#

No

modern kayak
#

68 + 32

sturdy stratus
#

That's the percent

#

Abi: 16 points

modern kayak
#

ah alr

#

50?

sturdy stratus
#

Yes

#

Did you know it or just guessed?

modern kayak
#

i knew it cuz i divided

#

by 2

#

100

sturdy stratus
#

Okay

modern kayak
#

but ty again

#

🙂

sturdy stratus
#

np

modern kayak
#

.close

calm coralBOT
#
Channel closed

Closed by @modern kayak

Use .reopen if this was a mistake.

#
Available help channel!

Send your question here to claim the channel.

Remember:
Ask your math question in a clear, concise manner.
Show your work, and if possible, explain where you are stuck.
After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

twin apex
#

can x<5/3 and x>13/3 be written as XE(13/3,5/3)

twin apex
#

just double checkin

visual nimbus
#

but 13/3 is greater than 5/3, so your notation makes no sense

#

but the spirit is there

twin apex
#

thats what im double checkin

#

hmmm

#

yeah duh

#

shoulda just solved 13/3 and 5/3, was just confused xD so the correct form is

#

XE(5/3,13/3)

visual nimbus
#

yea but that means x>5/3 and x<13/3

twin apex
#

oh shoot, then how would I write x<5/3 and x>13/3 in XE(x,y) format?

#

hmmm lemme think one sec sorry

visual nimbus
#

but that makes no sense

#

again, 13/3 > 5/3

twin apex
#

Well the original problem is to solve the inquality for I 3z - 9 I > 4

#

and i got "z < 5/3 or z > 13/3"

visual nimbus
#

impossible lmao

#

try again

twin apex
#

???

#

how do YOU solve an inequality?

#

cause the textbook agrees with "z < 5/3 or z > 13/3" but i was just trying to write it in interval notation

visual nimbus
#

oh, I see the problem
You have z < 5/3 (the first solution) or z> 13/3 (the second solution)

You will have two intervals

twin apex
#

so they're separate, and i need to be using ]U[ ?

#

somethin like that?

#

or rather )U(

visual nimbus
#

(-oo, 5/3) U (13/3 , +oo)

twin apex
#

ooooh ok got confused again thinkin 13/3 was the smaller value

#

it's the fractions that are gettin me mixed up on where i need to be placin em on the number line, but i should type 13/3 into my calc and see 4.33, 5/3 see 1.66, so 13/3 is to the right of 5/3 on the number line

#

and cause z needs to be smaller than 5/3, or bigger than 13/3, i get why it needs to be (-inf, 5/3)U(13/3,inf) 🙂

#

thanks!

#

.close

calm coralBOT
#
Channel closed

Closed by @twin apex

Use .reopen if this was a mistake.

#
Available help channel!

Send your question here to claim the channel.

Remember:
Ask your math question in a clear, concise manner.
Show your work, and if possible, explain where you are stuck.
After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

earnest pendant
#

ahem

calm coralBOT
earnest pendant
#

all one question

hidden elbow
#

yeye

#

aye aye

#

wassup

#

so

#

what’s the qn

#

hm

earnest pendant
#

its up top

hidden elbow
#

ye

#

which

earnest pendant
#

there same

#

question

hidden elbow
#

all?

earnest pendant
#

yah

#

thats all one quetion

hidden elbow
#

eh alr

#

you know

#

the abc

#

a=

#

b=

#

c=

earnest pendant
#

yah 1 , -4 and9

hidden elbow
#

aye nice bro

#

alr

earnest pendant
#

a=1 b = -4 and c=9 ?

hidden elbow
#

so

#

so

#

you know

#

what is

#

x coordinate

#

and y coordinate

earnest pendant
#

.

hidden elbow
#

you know

#

what that means

#

I not asking u for it

#

I just asking u

#

if yk

#

what it means

earnest pendant
#

yeh

hidden elbow
#

alr nice bro

#

so

#

to find

#

X coordinate

#

of vertex

#

u use

#

-b/2a

earnest pendant
#

ok

#

wait

hidden elbow
#

alr

#

take ur

#

time bro

#

np

earnest pendant
#

so its 4/2

#

which is

#

2

hidden elbow
#

nice

earnest pendant
#

right
?

hidden elbow
#

perfect

#

see you got this

#

alr so

#

now

#

x coordinate

#

of vertex

#

is 2

#

so u know

#

x is 2

#

how to find y coordinate

#

of vertex?

#

take a guess

earnest pendant
#

umm

#

idk....

#

I FORGOT 😦

hidden elbow
#

alr so

#

issokay lah

#

I can guide u

#

np

#

so

#

you have the function

#

f(x)

#

ye

earnest pendant
#

ye

hidden elbow
#

you know x

#

2

#

so

#

you plug x=2

#

and that’s how

#

u find y

earnest pendant
#

ohh

#

wait

hidden elbow
#

alr

earnest pendant
#

,w x^2-4x+9 when x=2

hidden elbow
#

yepp

#

nice

earnest pendant
#

oh my bad

hidden elbow
#

so basically

#

f(2)

hidden elbow
#

nice

earnest pendant
#

y = 5 :3

hidden elbow
#

amazing

#

aye

#

so ur

#

vertex is

#

(2,5)

earnest pendant
#

ye

hidden elbow
#

nice nice

#

you got this

#

so next part

#

let’s go

#

hm

#

alr so

#

x intercept

#

what does

#

it mean

earnest pendant
#

x = 0

#

y*

hidden elbow
#

amazing

#

so

#

ok let me make it clear

#

so

#

usually

#

are u used to

#

the eqn

#

being like

#

y=

#

something

earnest pendant
#

yeh

hidden elbow
#

alr so

#

here

#

it’s like the same thing

#

except

#

f(x) is like y

#

so

earnest pendant
#

so to find y

hidden elbow
#

u know y=0

earnest pendant
#

we make x=0

#

for y intercepts

#

?

hidden elbow
#

amazing

#

yes

#

aye aye

earnest pendant
#

,w y=x^2-4x+9 when x=0

earnest pendant
#

tis 9

hidden elbow
#

mhm

#

that’s ur

#

what

earnest pendant
#

y intercept

hidden elbow
#

nice

#

how abt x

earnest pendant
#

im on thats

#

,w y=x^2-4x+9 when y=0

earnest pendant
#

scari numbers 😦

hidden elbow
#

ye so imaginary

#

that means

#

eh

#

no y-intercept

#

wtf

#

why ur qn like that

#

Lmao

#

nah can’t be

#

oh wait

#

nvm

#

ye

#

that means no x intercept

earnest pendant
#

am confuzed

hidden elbow
#

so basically

earnest pendant
#

there no intercept right ?

hidden elbow
#

that i

earnest pendant
#

because

hidden elbow
#

u see the i

earnest pendant
#

it goes downnn

hidden elbow
#

nah this is a happy face graph

#

it’s going up

earnest pendant
#

oh

hidden elbow
#

just that

#

it doesn’t cross

#

the x - axis

earnest pendant
#

OH

hidden elbow
#

yeye

earnest pendant
#

ok ok that makes more sense

hidden elbow
#

yep

#

so like

#

u saw the letter i

#

that stands for

#

imaginary

earnest pendant
#

IMAGENRARy

#

yup

hidden elbow
#

ayeeee

#

nice

#

so ye

#

no x int

#

u can use discriminant

#

to show that

#

b^2 -4ac

#

<0

earnest pendant
#

okey

#

i can sketch later

hidden elbow
#

nice

#

so

earnest pendant
#

but the min or mac

hidden elbow
#

the next part

earnest pendant
#

max*

hidden elbow
#

is where

#

our vertex

earnest pendant
#

wud be 5 right ?

hidden elbow
#

comes in handy

#

5 is for y yes

#

so that’s the minimum

#

y=5

earnest pendant
#

but

hidden elbow
#

it’s not maximum

#

because

earnest pendant
#

2 is smoller than 5

hidden elbow
#

this is a happy face

earnest pendant
#

hm

hidden elbow
#

when we take abt

#

max/min

earnest pendant
#

it applies to 5 ?

hidden elbow
#

it’s where u draw the y line

earnest pendant
#

so it only applies to y

hidden elbow
#

the coordinate of the minimum pt

#

is (2,5)

#

but ye

#

y=5

earnest pendant
#

if its likke -5 id be max right ?

hidden elbow
#

nah

#

to see if it’s max or min

#

do u know

#

abt

#

happy face sad face

earnest pendant
#

yes

hidden elbow
#

nice

#

so

earnest pendant
#

the way it goes up and downs

hidden elbow
#

if u

#

have sad face

earnest pendant
#

: (

hidden elbow
#

the left

#

that’s a maximum

#

cuz

#

sad face

#

has a highest point

#

it has no

#

lowest point

earnest pendant
#

so its the highest point

hidden elbow
#

cuz it goes down never ending

earnest pendant
#

OHHH

#

I understand now!

hidden elbow
#

yeye

#

nice

#

same concept for happy face

earnest pendant
#

hapi face is min sad is max

hidden elbow
#

perfect

#

see u got this

#

alr so

earnest pendant
#

oh the next one is range...

hidden elbow
#

next part is range

#

range means

#

okay wait

#

uk abt domain right

earnest pendant
#

ye

#

tis x

hidden elbow
#

domain refers to

#

yes exsctly

#

X

#

so range

#

applies to values

#

that y

#

can take

#

so we found out

#

that y

#

ONLY

#

goes down to

#

5

earnest pendant
#

ye

hidden elbow
#

that’s the minimum

#

then rmb for sad face

#

it goes down never ending

#

for happy face

#

it goes up

#

never ending

#

to infinity

earnest pendant
#

thats tru

hidden elbow
#

ye

#

so

earnest pendant
#

so

#

its infity, 5

hidden elbow
#

nah

#

usually

#

smallest to biggest

#

also

#

what brackets

#

will u use

#

that’s impt

earnest pendant
#

[)

hidden elbow
#

open or closed int

#

nice

#

there u go

#

ye

earnest pendant
#

the regiular paranthesis for the 5 because its not infity right ?

hidden elbow
#

regular as in

#

(

#

?

earnest pendant
#

ye

hidden elbow
#

so yoh want to apply

#

]

#

to infinity?

earnest pendant
#

yah...

hidden elbow
#

alr so

#

infinity

earnest pendant
#

WAIt

#

tWIAIT

hidden elbow
#

isn’t an actual number

#

yeyeyey

earnest pendant
#

THE INFITY is the ) and 5 is [

hidden elbow
#

AYEEEE

#

yeyeyyee

earnest pendant
#

so [5,insert inf symbol)

hidden elbow
#

[ means inclusive of that number

#

yeye

#

so just know that

#

if ure dealing

#

with inf or -inf

#

it will never

#

be []

#

for the inf

earnest pendant
#

oh ok

hidden elbow
#

cuz it’s not a real number

#

so u can’t include it

earnest pendant
#

i sees

#

i still have more homewrok tho 😭

#

If u wana help

hidden elbow
#

gd luck bro strong 💪

#

eh I kinda gtg HAHA

earnest pendant
#

im fine but if not ill use this for wolf

#

tis ok

hidden elbow
#

yeye im sure

#

there are much more

earnest pendant
#

bye bye thank u so much

hidden elbow
#

qualified ppl

#

npnp

earnest pendant
#

nah

hidden elbow
#

glad to help

earnest pendant
#

bai baiii

hidden elbow
#

peace

#

take care bro

earnest pendant
#

-b/21

#

2a*

#

bet

#

8/-8

#

-1, ?!

#

,w y=-4x^2-8x-5 when x=-1

earnest pendant
#

,w -4x^2-8x-5 when x=0

earnest pendant
#

,w y=-4x^2-8x-5 when y=0

calm coralBOT
#

@earnest pendant Has your question been resolved?

calm coralBOT
#
Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

#
Available help channel!

Send your question here to claim the channel.

Remember:
Ask your math question in a clear, concise manner.
Show your work, and if possible, explain where you are stuck.
After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

crisp glen
#

i dont get the wording

calm coralBOT
crisp glen
wintry glacier
#

well the halftime is 1600 years