help-0

[native temple]

Oh great

google

[native temple]

but seriously it)s for school

please help

what did I do wrong

how many people are asking questions

?

also for school

[merry burrow]

Try google the question and if it doesn’t show come back

Someone will help

[young finch]

already two other people asking for help move that somewhere else

[merry burrow]

Kk then

[wary stream]

You should exhaust all other resources first then come back here. Google definitely tells you how to find it

[native temple]

But like......

Is google allowed for help

i’m asking for help....

[visual imp]

Can someone help me with this?

[native temple]

specifically what did I do wrong

[wary stream]

What kind of assignment are you working on?

[native temple]

an ellipse

[native temple]

see the pic

?

[young finch]

yes ellipse assignment

no he means test, homework, or classwork

[native temple]

see

ellipse

[young finch]

dude

[native temple]

is zooming impossible?

[visual imp]

Determine the exterior angles of the following polygon

[wary stream]

First do (100 - 64) first

[native temple]

classwork

[wary stream]

Then square root

[native temple]

not 64

oh

100-36

[wary stream]

Yes 64, I edited it

But (100 - 64) first

[native temple]

will that’s sqrt(46)

but that’s an irrational

which is why it isn’t on the pic

[wary stream]

You mathed wrong

100 - 64 doesn't equal 46

[wary stream]

46 is wrong

[alpine sable]

someone mind helping me set up both when you guys are free

[wary stream]

Factor

[alpine sable]

for which one

[wary stream]

Both

[alpine sable]

I can do the first one then just not the second

[native temple]

Ahh c= 6

[wary stream]

Apply the tangent equivalency

[alpine sable]

not sure what that is, this is only our 1st day learning it

[dry berry]

the second one is $(2\cosx +1)(\tanx -1) = 0$

[wary stream]

Don't give answers

Let them learn

[dry berry]

ok

[alpine sable]

Ya I appreciate it but I wanna learn it

guys how do we know if the answer will be positive or negative

[dry berry]

all right

[alpine sable]

second quad

no

[alpine sable]

but how did you set up the second one

[merry burrow]

Are you guys done

[alpine sable]

then 2y will be in 2nd and thrind quadrant

not at the same time

but multiply the inequality

by 2

180>y>90

360>2y>180

cos can be positive and negative

[alpine sable]

how did you get the tanx-1 in the second part

[dry berry]

you see 2cosxtanx - 2cosx?

[alpine sable]

yah

[dry berry]

factoring 2cosx

[alpine sable]

ahh

ok

[dry berry]

you have 2cosx(tanx -1)

[alpine sable]

guys pls help me

[dry berry]

for the last one we will factor (tanx - 1)

then you have it

[alpine sable]

wym

[dry berry]

stay focus on the last one

[alpine sable]

gansta pls help me

ok

[dry berry]

2cosx(tanx - 1) + (tanx - 1) = 0

[alpine sable]

i am noob

[dry berry]

can you see (tanx - 1)

[wary stream]

Wait your turn

[alpine sable]

yes

[alpine sable]

ok

[dry berry]

now we will factor it out

[alpine sable]

ok..

[dry berry]

just like 2ab + b = 0 <-> b(2a + 1)= 0 but b is tanx -1

[wary stream]

I didn't realize, until seeing some of the messages, factor by grouping, for the second question

[chilly laurel]

help?

[dry berry]

hope you understand

[alpine sable]

ok, and then we have the second part right which is (tanx-1)(2cosx+1)

[wary stream]

Channel busy

[alpine sable]

and then we set both = 0

[chilly laurel]

k

[dry berry]

yeah

coming for the solve part

[alpine sable]

so it would be tanx-1 = 0 and then 2cosx+1 =0

[dry berry]

yeah 🙂

[alpine sable]

ok so

give me a momment

[alpine sable]

2/49 ig

[chilly laurel]

okay

[alpine sable]

so we have tanx = 1 and cos x = -1/2

[dry berry]

keep going

we need to solve for x

[alpine sable]

hmm

[alpine sable]

do u need explantion?

so do I draw the graphs and use the pie table to get the values for x?

[chilly laurel]

yes please

[alpine sable]

first check if my ans is correct

[chilly laurel]

i cant, there is no one to help me

[wary stream]

Just use the unit circle

[chilly laurel]

nor is there an answer sheet

[dry berry]

x can has many values my friend

[alpine sable]

total possibilities = 7x7=49

[alpine sable]

oh so we need to use a equation

[alpine sable]

for both on same day there are 2 possiblities

hence 2/49

[chilly laurel]

right makes sense

[alpine sable]

im lost now, what is the next step using the unit circle

[wary stream]

It says for all values of x, meaning you should have a general equation

[alpine sable]

got it?

[wary stream]

For the tangent and cosine value

[dry berry]

you will need to learn how to solve trigonometric equations lol

[chilly laurel]

yes thank you

[alpine sable]

tanx=tantheta

x=npi + theta

cosx=costheta

x= 2npi +- theta

[alpine sable]

So do we only need the equation left to solve the problem

[alpine sable]

yes

[wary stream]

Why are you giving the answers?

[alpine sable]

to derive slution use set of values for which cosx and sinx =0

[alpine sable]

cause he asked for them

[wary stream]

When did they say that?

[alpine sable]

so would it be 90 degrees for tan and 210 for cos

[alpine sable]

.

[native temple]

Did I get it right! If what did I do wrong!??

[wary stream]

That wasn't asking for the answers

[alpine sable]

ahh

my bad

I was trying to see if I got it right

but im guessing not

[alpine sable]

ok, so whats next.

[dry berry]

hmmmm

[wary stream]

No, not this

[frank crown]

Could anyone help me out with this

[wary stream]

Channel busy

[dry berry]

x= 45 for tanx dude

[alpine sable]

I need some help with this trig question

[dry berry]

you can use arctan of 1

[wary stream]

Channel busy

[wary stream]

Did you mean to reply ping me?

[dry berry]

oops

anyway im quitting

good luck

[alpine sable]

I have no clue then what x can be, I thought using the unit circle I just locate were 1 for tan and -1/2 fir cos would be

[devout crag]

need help with 12

[wary stream]

Use the unit circle to determine the initial value of x

[alpine sable]

I did and thats how I got 90 and 210

[modern merlin]

For this do I find the inverse first ?

[abstract totem]

since f (x)=y switch them out

[modern merlin]

Yes

[abstract totem]

then swap x and y values

then solve for y

[dry berry]

yup

[modern merlin]

And after I get the inverse I put 4?

In places for x

[dry berry]

this channel is always full of questions

[abstract totem]

you put 4 in for x

yes

[abstract totem]

0 is a good number

[modern merlin]

Okk let me try it

[native temple]

Look

[wary stream]

You used the unit circle wrong to find x for tangent and cosine

[alpine sable]

then how else could I use it I do not understand

[wary stream]

What angle produces 1 for tangent

[alpine sable]

0,180

[wary stream]

Wrong

What's tangent? The ratio for tangent

[alpine sable]

y/x

[wary stream]

So using, 0 and 180, x and y coordinates, do you get 1?

[alpine sable]

no

[wary stream]

So what's the correct angle?

[alpine sable]

umm, the only other angles that have +1 is 90

thats why im confused

[modern merlin]

@abstract totem what do I do with E^y?

[wary stream]

You're just looking at either the x or y component. You need to apply y/x

[alpine sable]

ummm

[wary stream]

So what angle, using y/x gives 1?

[alpine sable]

root 2 over 2

[wary stream]

The angle

Not value

[abstract totem]

technically you can just leave it

[alpine sable]

45

[wary stream]

That's for tangent, now the cosine value

[modern merlin]

Okk

[wary stream]

What's cosine represent?

[alpine sable]

x/r

[wary stream]

In general, meaning the x value because r in the unit circle is 1

So what angle has an x value of -1/2?

[alpine sable]

120,210,270,330

[wary stream]

There's only 2 that has an x value of -1/2

[alpine sable]

well only 270 and 120

right

[wary stream]

And 270 is wrong, look again

[alpine sable]

uhh thats the only other value I see with -1/2 in the x

[wary stream]

270?

[alpine sable]

yes

oh

240

i ment

sorry

I thought I was saying 240 the whole time

my bad sorry

but 240 is the other one

[wary stream]

How often does 1 appear for tangent?

[alpine sable]

180

[wary stream]

More often then every 180 degrees

[alpine sable]

umm

are we talking about the period

[wary stream]

Yes

[alpine sable]

so 360?

or

30

[wary stream]

First one starts at 45, what's the next angle that has 1 for tangent?

[alpine sable]

90

[wary stream]

Wrong, tangent is y/x, does 90 produce 1 when doing y/x?

[alpine sable]

no

[wary stream]

So what's the next angle that has 1 for tangent?

[alpine sable]

the next one would be at 225

[wary stream]

How often was that? Like between 45 and 225, how many degrees in between?

[alpine sable]

180

[wary stream]

Meaning every 180 degrees, produces tangent of 1, correct?

[alpine sable]

yes

[wary stream]

So what's the general equation for x related to tangent?

It involves the 180 degrees and the initial 45

[alpine sable]

um x= 45 + 180k

right

[wary stream]

Yes

Do the same for cosine

[alpine sable]

oh boy forgot we had that

[wary stream]

You'll have two general equation for cosine, one starting at 120 and 240

[alpine sable]

oh so would it be x=120 + 360k

and 240+ 360 k

[wary stream]

Correct

To both

[alpine sable]

perfect and that all right!

[wary stream]

Did you expect it to be incorrect?

[alpine sable]

no not really just making sure

[frank crown]

Is the right answer is 1+1+1

[ionic jewel]

I dont think so

how did you get that

[frank crown]

I know it's wrong

How can I get the minimum value that satisfies the 3 equations

[alpine sable]

how do i create an equation in slope intercept form (y= mx+b) for a vertical line

[hallow skiff]

tan(x) -2.8 0 degrees<=x<=360 degrees

can anyone help me ^

[worldly breach]

why am i getting an error in my calculator when i enter Cos-1(5/4.6)

[valid warren]

put it in rad mode

[worldly breach]

why

i wanna get the theta

[ionic jewel]

I think this is math above my level (number theory?) but I did it by just listing the possibilities of 2+3k for k in Z+ and the other ones and finding where they are all equal

I don't know other ways to solve diophantine equations

[frank crown]

Why 2+3k?

[ionic jewel]

3a+2

i just reformatted it

but if this is actually a number theory course there's definitely a better way to solve it

[knotty sleet]

You can use modular arithmetic

[frank crown]

Do you mean that I have to convert all variables to k

[ionic jewel]

no

[knotty sleet]

Maybe Chinese remainder theorem or something

Or just brute force it from a

[ionic jewel]

okay what class actually is this

[knotty sleet]

Probably easier to brute force

[ionic jewel]

i want to see if it's a "you should be brute forcing" or a "you should be applying what we learned" problem

[frank crown]

I don't really know

[knotty sleet]

Ah right good point

[ionic jewel]

well you know the number they equal is

a multiple of 3, minus one
a multiple of 5, minus one
a multiple of 7, minus one

those are all prime, so the least common multiple or whatever it's called is 105, so I think that's what they all equal, (added 1 to account for our offset to get 104)

[frank crown]

I don't know what does brute force mean

[steep matrix]

.

[ionic jewel]

a = 34, b = 20, c = 14

@frank crown

read my work above the other guys problem

[frank crown]

How did you get this.. I don't really understand

[native temple]

TEST

[ionic jewel]

read my work above

[ionic jewel]

this and the one below

[knotty sleet]

That's actually quite nice

[ashen wave]

So im reviewing linear inequlities, is there other inequalities? other than linear.

[ionic jewel]

yes

[knotty sleet]

E.g. quadratic

[ionic jewel]

anything comparable can have inequalities

[ashen wave]

oh ok

thanks

[native temple]

WITH ELLIPSES IS C HORIZONTAL OR VERTICAL

[knotty sleet]

Yeah that's correct

[valid warren]

ok good lol, I was doubting myself

thanks

[native temple]

I’m not pinging helpers.......Help me

[valid warren]

you mean major and minor axis'?

[knotty sleet]

What is your question? I don't quite understand 😅

[valid warren]

if the minor axis is bigger, then its vertical

major = horizontal

[native temple]

1I mean c in c^2 = a^2 - b^2

[valid warren]

c is focai

[ionic jewel]

that one happened to work out nicely but I'm still not sure how to solve a generic equation of that form

[native temple]

Like C is x or y coordinate of foci?

[knotty sleet]

For general ones you can use Chinese remainder theorem pretty sure

[strong furnace]

Euclidean algorithm from what I know

[valid warren]

c is x coordinate

or y coordinate when its vertical

[frank crown]

Yeah, I get it by listing.. Thanks.. But the answer now must be 70 which I can't find in the options

[knotty sleet]

So for that one you had 3a+3=-1 mod 5 and mod 7

[valid warren]

but to find out if its that, you should know from the minor/major axis

[knotty sleet]

So a is 4 mod 5 and 6 mod 7

[valid warren]

and still, the value for c won't change

[knotty sleet]

So 34 mod 35

And then 34 works

[valid warren]

vertical or horizontal, it will remain the same

[ionic jewel]

never heard of CRT guess i can go learn it

[valid warren]

except y and x are swapped

[native temple]

When is it vertical?

[alpine sable]

can someone explain this in the vc?

[valid warren]

when minor is greater than major

[knotty sleet]

👍

[valid warren]

for the axis lines

for example, the vertical distance in an ellipse is 12cm, then the horizontal distance is 3cm

[valid warren]

that is a vertical ellipse

[ionic jewel]

for starters it adds up to 68

[native temple]

So A is the biggest value dividing in the equation?

[frank crown]

What if the unknown above the radical

[valid warren]

a is the major

b is the minor

[frank crown]

Many thanks

[ionic jewel]

,rotate

[valid warren]

but in a vertical ellipse the minor goes under the x

for the equation

[ionic jewel]

32^((a+4)/a) = 8^5

find the common base

then take the log

32 = 2^5, 8 = 2^3

[native temple]

So C is distance to foci traveling the major axis?

[ionic jewel]

also you have some weird problem sets, those last two problems are pretty much unrelated

[kindred tartan]

Any idea how to prove

[valid warren]

yes

or minor axis

its placed on the biggest axis

[valid warren]

plug in numbers for each variable

[ashen forge]

Is all power raised to zero equal to zero?

[strong furnace]

assume it is divisible then f(x) can be written as (x+a)*g(x) for some polynomial function g(x) then f(-a)=0 but you can show f(-a) != 0 (hence proved (by contradiction))

[ionic jewel]

isn't it true for a = x

[frank crown]

What about this

[strong furnace]

wdym?

[alpine sable]

?

[frank crown]

Should I take 5 and 8 for max and - 3, 1 for min

[alpine sable]

Can someone help me with an easy geometry question

[strong furnace]

@kindred tartan don't just copy this tho you still have to show f(-a) != 0 which I hope you can do on your own

[alpine sable]

@alpine sable

[warm crypt]

I need help understanding this.

[abstract totem]

not sure what the labelling is doing here but find y first by 2y+12=5y then plug it in to 2y+12=5x-28 because the sides are parallel

[alpine sable]

Thanks I got it now

[vapid ermine]

i think its 2y+12=5y and 5x-28=X. We don't know diagonals are equal

[abstract totem]

then why set x = to 5x+28 if we dont know theyre equal?

-28*

[vapid ermine]

@abstract totem cause it is divided half

[abstract totem]

bro you just said we dont know if theyre equal

it looks like a rhombus in which case they're DEFINITELY not divided in half

[vapid ermine]

and they cant be equal

[abstract totem]

we know that the outside opp lines are equal because its a parallelogram

[vapid ermine]

i checked on Wikipedia @abstract totem

and diagonals not equal

[vapid ermine]

cause for any diagonal its true

[little fossil]

what is the discriminant

[vapid ermine]

d²=a²+b²-abcosA @abstract totem

[abstract totem]

yeah i know but you told me they werent equal then told me to do what i said

[vapid ermine]

you make equal different things

[abstract totem]

the second equation is to prove

the outside lines ARENT diagonals and ARE congruent because its a PARALLELOGRAM

[vapid ermine]

bro one of diagonals are a²+b²-2abcosA=D²
and other one ise a²+b²-2abcos(180-A)=a²+b²+2abCosA @779hp#2212

you see they are not equal

@little fossil x²-14x+2=0

[hallow skiff]

Can anyone help me with creating an IOD with this function

[vapid ermine]

@hallow skiff can you say what's IOD. İ didnt hear

[vapid ermine]

so D²=196-8=192

[little fossil]

wow

[abstract totem]

yes and x=4

[little fossil]

what are the a b and c btw

[vapid ermine]

@little fossil b²-4ac
b=14 c=2 a=1

[little fossil]

okie tysm

[hallow skiff]

idk what its exactly called but it looks like this

[vapid ermine]

i dont get it sorry

[pastel jasper]

Can someone explain what X ~ means

it's about binominal

[alpine sable]

@vapid ermine @abstract totem it was 7

[blazing gust]

Can somebody help me w this

[vapid ermine]

yep i said x=5x-28

[clever locust]

no idea what it actually is in this context, but it could be an equivalence relation

[native temple]

https://notability.com/n/0bOrgyXQW6t7lKkhjhp3nK

On Page 11 am I right?

[molten ore]

help plz

[alpine sable]

calculate volume of each and add them up

[pastel jasper]

@clever locustOkay thanks though :))

[native temple]

I asked first

[vapid ermine]

it's easy

for A

[native temple]

asked 1st

[native temple]

asked first

[native temple]

byeeeee

[molten ore]

?

[alpine sable]

@vapid ermine thanks dad

[vapid ermine]

@molten ore V(A)=π(9.8)²×11.3/3+π(9.8)²×15+7.7×10.1×26/3

[vapid ermine]

ur welcome

for B

[alpine sable]

nice explanation

[vapid ermine]

V(B)=4/3×π(9.8)³/2+π(9.8)²×15+5.4×4.8×26×2

[vapid ermine]

its formula

i think not needs any explanation

[alpine sable]

What am I doing wrong is it 5y-6+y+58=180?

[vapid ermine]

@alpine sable y+58=5y-6 just

[vapid ermine]

its correct for 5y-6+3x-17=180 or 2x+24+y+58=180

[native temple]

Is this right??.??!!!

[molten ore]

lolllllllllllll

[native temple]

I 1 skid first

I ASKED FORST

BY A TIME OF A FEW MILLESECONDS

No I did look at the message history

[molten ore]

ok ?

[native temple]

now

is that right?

[molten ore]

is there a certain answer or just leave the formula as it is? and do you know which one is bigger in volume?

[little fossil]

how you so good at math 0-0

[vapid ermine]

just calculate them

[vapid ermine]

i'm right. Did you see it was x=5x-28 x=7 it did what i say not u

[molten ore]

i uhhhh.... uhhhh...... how?????

[native temple]

Hello

I asked first

[vapid ermine]

@molten ore with calculator?

[molten ore]

TI-84 a good one?

[little fossil]

ik but how lol

[native temple]

while I asked in the same minute I asked first so by the rules

take it to another channel

now

[vapid ermine]

The diagonals are divided in half from the point of intersection

[native temple]

<@&268886789983436800>

I asked first

[little fossil]

I'm saying how you so good at math 0-0

[vapid ermine]

what? r u kidding or u serious?

i didn't get ur point

[little fossil]

serious 😦

[vapid ermine]

oh ok. idk but i am bad in history, biology etc @little fossil i love Physic and Math

[native temple]

Am I right?

Am I?

[little fossil]

Self learner or you went to college?

[muted crown]

[vapid ermine]

only school

[little fossil]

o

[vapid ermine]

@native temple i'll help you in 1 minute

[sly mantle]

@little fossil please move offtopic talks to #chill or drop them. these channels are for those who need help

[vapid ermine]

@native temple ok i came. correct solution is this.
x²-16x+64+36y²-72y+36-36=0
(x-8)² + 36(y²-2y+1)-36=0
(x-8)²+36(y-1)²=36
(x-8)²/36 +(y-1)²=1

center is 8;1

[native temple]

I'm right thanks

[vapid ermine]

@native temple u wrote x twice one of them is y

[native temple]

I quess I got it in a different order?

oh

stupid me

[vapid ermine]

second one is y

[raven vault]

@vapid ermine can u help me with a question pls?

[vapid ermine]

just you write y instead of second X

[vapid ermine]

if i can yeah

[raven vault]

can i send via dm if ok

[vapid ermine]

ok

but u can see in there. so others can learn

[shell marsh]

what does expanding this mean

[mossy lion]

laplace or cofactor expansion

[shell marsh]

thank u!

[tough latch]

pls help

[ionic jewel]

pythagorean thm

x^2 + 11^2 = 61^2

[vapid ermine]

@tough latch a²+b²=c²
a=11 c=61 x=b

its formula

[tough latch]

D:

[tough latch]

result?

[vapid ermine]

@tough latch pls translate what is BF

[vapid ermine]

just calculate

[alpine sable]

is this quiz or exam

@ocean patio

<@&268886789983436800> could you give him advice as you're more helpful than helpers here

i mean could you help him leave this place

[sly mantle]

b&

[alpine sable]

thx

can anybody help me with the surface area of a square pyramid. anything i do its 305 but i know its either 280 or 265 (it gives the options) i cant figure out how to get them

[ashen wave]

What is the difference between mean and mean absolute deviation?

[ashen forge]

{( -2 + 8)² -3. [(√16 + √4) : 3]} : (-5)
Help pls

[alpine sable]

pemdas

@ashen forge

[ashen forge]

?

@alpine sable

[alpine sable]

google it

[ashen forge]

dont have in google

[alpine sable]

wdym dont have in google

kek

[timid wind]

who knows how to solve this

[alpine sable]

0, +-sqrt11, no soln

[clever locust]

No

It's not equality

[alpine sable]

hmm

[wild viper]

hmm

[clever locust]

For the first one, realize that x^2 ≡ 0 (mod 16) iff x^2 is some integer multiple of 16

[ashen wave]

can anyone help :((

[wild viper]

hmm

[tardy timber]

Same with the second one, realize that x^2 congruent to 11 mod 39 indicates that x^2 - 11 is an integer multiple of 39

[thin berry]

Guys how is b. 1/18 ?;

I think im dumb

[ashen quarry]

can i get help with this plz?

[thin berry]

Q and R are complementary , their sum are 180

This shape measure is 360°

So 360-(118+34) is equal to 7x

208 is equal to 7x

208/7 =29.7

Wait what

[ashen quarry]

😭

[thin berry]

Can you give me the question ?

[ashen quarry]

that's the whole thing, im pretty sure

[thin berry]

Only the pic ?

Hmm

[ashen quarry]

yeah and there's no answer key for me to check

[devout quartz]

calculate QPR

and its equal to 7x

[ashen quarry]

so 180-118-34?

[devout quartz]

yup i think

[ashen quarry]

so x is 4?

[thin berry]

Since ur here

[devout quartz]

i guess 🙂

[thin berry]

Do you know how to solve this ?

[ashen quarry]

thank you lol

[thin berry]

Why is b. 1/18

[devout quartz]

the probability to have a 1 is 1/6 if its a six face cube

[thin berry]

Umm

Oh

Okay

Didn't know that if it is a cube then 6*6

Ty

[devout quartz]

np 🙂

gotta think simple sometimes

[thin berry]

Kek

[devout quartz]

sorry if im not really understandable sometimes, doing maths in another language than my mother's tongue is hard lmao

i hope it helped

[thin berry]

Im not an english speaker too

An so all my fam lol

[ashen quarry]

does x = 9

[alpine sable]

show work

[ashen quarry]

i think you have to double 2x-10

to become 4x-20 and then solve for the variable

4x-20=x+7

[devout quartz]

it should work

[ashen quarry]

okok thxx

[devout quartz]

np 😉

[ashen quarry]

im a bit confused on this one

[frank crown]

Is rs parallel to qb?

[ashen quarry]

it is a parallelogram

[ashen forge]

help pls

[frank crown]

So the two angles add up to 180

[ashen quarry]

okie

cause they are complementary, right?

[lean gust]

Hey , what the best book for hard maths

Hard exo of maths ...

[frank crown]

The answer will be 92

[ashen quarry]

how did u get that?

[frank crown]

Suplementary

[ashen quarry]

oh yeah oops

[lean gust]

The next years i am in the digest years of university

[alpine sable]

@lean gust #books-old

[lean gust]

Désolé

[frank crown]

Add every thing to 180

[ashen quarry]

thank youu

[woeful pulsar]

Just need to change it to a system of equations that say how many of each atom you have.

[frank crown]

Could someone help

[frank crown]

Np

[woeful pulsar]

,rotate

[alpine sable]

Hey guys could you guys answer 2 questions for a servey? I need the info to do a project in math class.

[woeful pulsar]

that doesn't make much sense?
the maximum of one number doesn't seem to make sense

there's a couple of not very good interpretations though

the current interpretation I'm thinking of is "find the maximum value for -2a+3b for -3<a<5 and 1<b<8" but this value doesn't exist

[frank crown]

I think I can't take 5 for a and 8 for b to get the max. Value.. Because there's no equal sign.. Right

[woeful pulsar]

yeah, and R probably means real numbers

the question is just badly structured

[frank crown]

It does

[alpine sable]

hey how do i solve this without a calculator? im kind of getting tied up on logs, sorry to bother.
log _(3.2)(11^(7))

[woeful pulsar]

are you sure 3.2 is not rounded in any way?

because it's not really possible to calculate this without a calculator

[alpine sable]

wait

[woeful pulsar]

just email the person who gave you the assignment to explain the question OR just skip this

[alpine sable]

i just tied up

2 answers

[woeful pulsar]

what answers

[alpine sable]

this is the real question

this is the 2nd

[frank crown]

Thanks alot

[alpine sable]

tied them up writing it

but yeah im not sure how i go about solving it without a calculator

[woeful pulsar]

5 and 6 are possible without a calculator

do you remember how log is defined?

[alpine sable]

i mean i know y=loga(x) goes to x=a^y

[woeful pulsar]

okay, replace a and x with the numbers in the question and see what equation you need to solve for y

[alpine sable]

oh

okay

i was overthinking it

thanks

[sacred arrow]

Can someone check my answers to these

And figure out how to do these:

[north fulcrum]

What is the slope of a line whose perpendicular to say y=1/5x+1

With perpendicular lines, is it the opposite, so would it be negative 1/5

[ashen quarry]

i think its -5

[north fulcrum]

What is the rule for that, so I can write it in my notebook?

[ashen quarry]

oh

[north fulcrum]

Who me?

[glass lichen]

perpendicular slopes are negative reciprocals

[north fulcrum]

@glass lichen Thank you

And thank you as well @ashen quarry

[ashen quarry]

good luck

[glass lichen]

does right refer to the prism or the triangle?

[woeful pulsar]

probably the prism

https://www.cut-the-knot.org/Curriculum/Geometry/Polyhedra/3prism.shtml

[glass lichen]

then yes, the base can be equi

[woeful pulsar]

well it doesn't say right regular hexagonal prism hmm

[glass lichen]

right prism just means the center of the bases are right above each other

[sacred arrow]

When you guys are finished, could someone help me with these few problems? When you guys are finished, could someone help me with these few problems?

[glass lichen]

what??

where the hell did that conclusion come from

[woeful pulsar]

a right hexagonal prism that's not very nice

[glass lichen]

yes

[rose tapir]

please help

im so tired

[mossy lion]

,rotate

[rose tapir]

god is dead and we killed him

[alpine sable]

Do vertical lines have y intercepts?

[next bluff]

just solve for slope between point C and D?

negative reciprical = perpenidicular line

[rose tapir]

i have that

[next bluff]

wait theres an easier way of doing it

LOL

[rose tapir]

-1/m

[next bluff]

y = 1/4x + 11

for point C put your y value in

and solve for x

[rose tapir]

just not sure how i sub in the bisector

[next bluff]

for point D, put the x value in and solve for d

[rose tapir]

ohh okay

[shrewd elbow]

I feel like I know it I’m just completely forgetting

[next bluff]

plug it into a quadratic solver lol

or use the quadratic equation

[shrewd elbow]

Oh ok I’ll look up the quadratic equation

[whole wind]

Anyone got any vids on stuff like this

[next bluff]

for #1 probs use soh-cah-toa

trig stuff

[shrewd elbow]

Can anyone help me with this I’m quite confused

[woeful pulsar]

do the same things to both sides of the equation to simplify it until you can isolate x to one side

[patent grail]

dang everyone here way smarter

[shrewd elbow]

Are the graphs supposed to be separate or together

[woeful pulsar]

if they are separate you'll have to indicate properly how they should be separated

there's only one function to graph

[shrewd elbow]

How can I put that into a calculator

[woeful pulsar]

depends on which calculator

[shrewd elbow]

Ti-84 plus

@woeful pulsar

[woeful pulsar]

yeah I'll need to figure out how to operate that calculator model first

how about try putting in values for x and plot where they land?

[shrewd elbow]

So I would put it in like -1/2x

Then do another graph of x

[woeful pulsar]

no, substitute in values for x

so that you can plot points that correspond to f

[shrewd elbow]

Wait so for the x part I need points over or equal to 2

But how do I know if a point is right?

[woeful pulsar]

just evaluate like f(-1), f(0) f(1), f(2)... and plot them on the graph

[shrewd elbow]

For both of them?

[atomic plover]

A 13 m flagpole casts a 7 m shadow at the same time of day as a building casts a 60 m shadow. How tall is the building? Use a diagram to find your answer.

[woeful pulsar]

what do you mean, both of them?

[atomic plover]

oh sorry

[woeful pulsar]

when you evaluate f(x) at x, only one of the pieces should be evaluated

[atomic plover]

didnt know it was being used

[shrewd elbow]

Well there is -1/2x and x

It’s fine

[shrewd elbow]

Oh ok

[woeful pulsar]

so try plotting some points?

[vocal kelp]

bruh im too dumb to know any of this

[whole wind]

Can someone do this for me with work I need to know this for a test

[grand cloak]

@whole wind i did the work but i want to help you with what you dont understand

[blazing gust]

Can somebody help me

[little lotus]

the second

[fair trench]

can someone tell me if this is correct :)?

[blazing gust]

Is this right ?

[little lotus]

the graph is incorrect

[blazing gust]

Ik it wouldn’t let me change it

How do I graph it?

[little lotus]

you have to include the 5 and all the larger numbers

[blazing gust]

Is this right ?

[gray isle]

no

that doesn't resemble anything close to x>5

[blazing gust]

Oh wait

I thought the

“>”

Was

≥

[ionic jewel]

that doesnt make it better

the blue line should cover all the numbers that are bigger than 5

[proud roost]

Yes.

[near pebble]

@proud roost quick question

does this make sense??

[proud roost]

@near pebble Can I see the equation above?

[gray isle]

as written, no

[proud roost]

That would make sense. @near pebble

[near pebble]

how

[proud roost]

x=-2+2im x=-2-2i

[gray isle]

they should've had something like +- on the 2i

[proud roost]

Wait, your right @gray isle

So it would be something like.

[near pebble]

it subtracts and keesps it positive like wtf??

[proud roost]

Wait hold up, wouldn't it be -2 +-2i

[near pebble]

exactly

...

[proud roost]

...

[gray isle]

it's bad

[near pebble]

it's funny because the person teaching it is just scrolling through it like a powerpoint and didnt even take a good look at what's going on

my teacher isnt the one teaching it

shes just basically a supervisor of the curriculum

[tame moon]

someone help

apparently there's an equation to solve for this but all I got was radius = 5 and im stuck

[gray isle]

the question doesn't make sense

[tame moon]

that's what I told my teacher because I thought sin theta was supposed to be in some range of -1 to 1

but she said it was solveable

[gray isle]

was there a diagram associated with this?

[tame moon]

none, just a word problem

[gray isle]

yeh, just go back to your teacher and say it makes no fking sense

[trail lichen]

yea im looking at it and thats a bullshit problem 😂

[alpine sable]

Is the equation 3x+17+2x+24

Or it that wrong

[gray isle]

is not an equation

[alpine sable]

How do we get x

[gray isle]

apply properties of opposite angles of a parallelogram to set up an equation

[alpine sable]

So

It’s 3x-17+2x+24=180?

[gray isle]

no

[alpine sable]

How

[gray isle]

do you know the properties of opposite angles of a parallelogram?

[alpine sable]

Yes now

[trail lichen]

set the opposite angles equal to eachother

x = 41

[alpine sable]

I’m so lost

💀

[trail lichen]

dont worry x = 41

you must learn the concept

then these problems become easy

[gray isle]

do you know the properties of opposite angles of a parallelogram?

yes/no

[alpine sable]

No

😅

[gray isle]

perhaps it would be a good idea to look that up

[alpine sable]

Yup @trail lichen thanks

@gray isle thanks as well

[trail lichen]

np

ngl helping feels kinda nice heehee

[harsh acorn]

Can someone help me on this question?

[wary stream]

Draw a diagram

[harsh acorn]

I tried but somehow I can't make a triangle from this

I get a 90 degree angle and two 45 degree angles but the lines does not make a triangle

Idk where do I do mistake

[alpine sable]

Am I correct ?

[wary stream]

Maybe it's because it doesn't make a triangle?

[gray isle]

y isn't 4

[alpine sable]

Holy crap I suck at this

It’s not?

[gray isle]

it feels like you completely ignored the presence of x
and equated the wrong things

you should really look up properties of a parallelogram

[harsh acorn]

can someone help on this too please?

[alpine sable]

I did ignore x lol I thought I just had to put y in a equation

[gray isle]

show your diagram

[harsh acorn]

I get something like this

[gray isle]

and what's the issue?

[wary stream]

That third line you drew isn't exactly SW

[gray isle]

also those don't look like 45° angles

don't expect those 3 lines to form a triangle, because they don't

[wary stream]

Like I mentioned, it's not going to form a triangle

[harsh acorn]

then how can I find the displacement?

[wary stream]

Redraw the diagram first

[wary stream]

Nope

[gray isle]

still no

[wary stream]

Still wrong

[harsh acorn]

Oh, they will overlap?

[gray isle]

yes

[harsh acorn]

And I will use phytogras theorem

I think answer is 45

[gray isle]

yes

[harsh acorn]

What about this question?

I have no idea how to solve this

[snow kernel]

Can someone help on this please?

[wary stream]

What's the difference between the two?

[snow kernel]

4?

[wary stream]

No

Look closely

[snow kernel]

Is it 2

[wary stream]

That's a value

[alpine sable]

im not really understanding this...

[wary stream]

Observe the two equations

[alpine sable]

so would sin(-x) turn to sin(-(1/2))?

[wary stream]

One value changes from something to something

[snow kernel]

Im talking ab the number of the answer choice

[jade sail]

i think u can apply that sin(-x) = -sin(x)

[broken nova]

b) csc = 1/sinx

[jade sail]

its saying sin(x) = 1/2 tho

right?

[alpine sable]

yeah exactly

[jade sail]

yeah use this sin(-x) = -sin(x)

[wary stream]

I'm saying look at the two equations

There's a change that occurs that an answer choice demonstrates

[broken nova]

And also, csc(-x) = -csc(x). Just like the sine one

[alpine sable]

so how would i end up starting the problem

that's where im stuck on

[dull storm]

how is this guys?

[teal vessel]

i think an easy way is to draw a graph and then mark out the 1/2 on graph and angle then corrosponding value of y coordinate

see the pic

[dull storm]

how is 1/k arctg0.228 = 3.747 guys?

i keep getting strange results in my calculator

[wary stream]

Seems sketchy. I would just post a screenshot instead of linking some file

[dull storm]

can someone please help me out?

[teal vessel]

first time sending pic

[snow kernel]

g(x) shifted 3 units to the right of f(x)

[broken nova]

remember that cscx = 1/sinx
Or in this case csc(-x) = -1/sinx
Sub in what the value of sinx is

[wary stream]

Yes correct

[alpine sable]

Am I right ?

[snow kernel]

Yay

[dull storm]

nobody knows how to help me out? 😦

[alpine sable]

@dull storm no Im in geometry ☠️

[wary stream]

What exactly is k and tg?

[alpine sable]

If you don't happen to get anybody, repeat your question in one chat channel, and if it isn't answered within the initial 15 minutes, ping the Helper role. Ayway, I think this dude is gonna help you out ^^^

[dull storm]

k=0.059833

sry i forgot to put that as well

[teal vessel]

so sin(-x)=-sin(x)

[dull storm]

i keep getting this

[wary stream]

And arctg is arctangent?

[dull storm]

1/0.059833 * tan(-1) (0.228)

yeah

tan ^(-1)

[wary stream]

If you're using your physical calculator, are you in radians or degrees?

[snow kernel]

I need halp woth this one too

[karmic spade]

well if year 2013 is at x=0, and at 2013 P(x)=3810,

then we know
a * (b^0) = 3810

does that help?

[snow kernel]

No not really

[karmic spade]

well anything to the power of 0 is equal to 1

right

so therefore we know since a * b^0 = 3810, that a * 1 = 3810 a = 3810

[broken nova]

Well not 0^0

[karmic spade]

that one's debatable :)

in most problem spaces defining 0^0 = 1 works out really nicely and doesnt lead to contradictions

but not all, thats true

[snow kernel]

Im still confused

[karmic spade]

does figuring out the value of a make sense

[snow kernel]

No

[wary stream]

Plug in your initial condition to find a

[karmic spade]

the problem says that the year 2013 is represented by x=0
so at P(0), you get the population at year 2013
at P(1), you get the population at year 2014

etc

[snow kernel]

Ok

[karmic spade]

and we know P(x) = a * b^x for some constants a and b

and we're trying to find those 2 numbers

but, we know what P(0) equals, since the data table has the population at year 2013

so we know since P(0) = 3810

does this make sense so far?

[snow kernel]

Yes

[karmic spade]

ok so we know P(0) = a * b^0

so therefore, a * b^0 = 3810

and generally, n^0 = 1 for all numbers n

so this means a * 1 = 3810

giving us a = 3810

[snow kernel]

Ok

thanks

[karmic spade]

👍

you can use a similar method, substituting a for 3810, at x=1 to find b

[snow kernel]

Ok

[woven pollen]

once more...

$b^\frac{3}{5}=(b^3)^\frac{1}{5}$

[ocean seal]

tensor

[woven pollen]

that'll have to do

[alpine sable]

do u play world of tanks?

NA?

[ionic jewel]

japenses meds are superior to Soviet meds

[woven pollen]

\begin{align*} x &= y + 3\ x - 3 &= y \end{align*}

[alpine sable]

Love you guys

[ocean seal]

tensor

[woven pollen]

hey, it worked. 🙂

\me lurns stuff

[ionic jewel]

how did u do that

[woven pollen]

used align*

[harsh acorn]

[sullen echo]

Looks like combination with repitition

[woven pollen]

for a in `seq 2 16`; do for b in `seq 2 16`; do for c in `seq 2 16`; do n=$(echo "$a + $b + $c" | bc -l); if [[ $n -eq 16 ]]; then echo $a $b $c; fi; done; done; done

use a Bash script.

Brute Force knocks down walls.

66

[sullen echo]

I love your method

[ionic jewel]

you don't actually need to brute force it but ironically it might be easier to do it that way anyways

[sullen echo]

Isn't it multicombination ((3,10))?

[ionic jewel]

a can be 2-16, b can be 2 to 16-a, and c is 16-a-b

im sure you can do something with those

double sum?

,w sum from n=2 to 16 of (sum from i=2 to 16-n of 1)

[ocean seal]

Wolfram Alpha doesn't understand your query!
Perhaps try rephrasing your question?
Click here to refine your query online

Requested by 兔子#6562

[ionic jewel]

Wolfram pls

that ends up being 90 which isn't right anyways

not sure why that's wrong tho

[analog terrace]

what is this problem called? our teacher still hasn't discussed anything because of laptop issues but she still gave a test

i want to at least know the formula

[gray isle]

there is no question there

[ionic jewel]

solving for the quartiles

or whatever they are called

[gray isle]

oh

though they were question codes

[analog terrace]

ight thank you

[gray isle]

nfi what D4 , P15 stand for though

[ionic jewel]

yeah me neither lol

[analog terrace]

gonna look for some tutorials on youtube

[ionic jewel]

thats why i didnt answer

[static mountain]

How can I solve this?

[ionic jewel]

same way you solve any other system I suppose

this one looks easy to isolate x on the bottom eqn

then plug into the first

[analog terrace]

either using a elimination or substitution i guess

[static mountain]

ah okay

hmm

[ornate gull]

Can anyone help me with an optimization problem

[ionic jewel]

perhaps

https://dontasktoask.com/

[ornate gull]

uhh alright

could i DM you?

[ionic jewel]

absolutely not

did you not even read the link

[ornate gull]

Ok then lmao

[ionic jewel]

this is a public help server, if you want help post a question

dming me makes me committed to helping whatever your problem actually is

[gray isle]

it shoukd be easier to isolate y^2 and plug

[static mountain]

thing is

with this equation