help-0

[marsh summit]

people

has sister no brother

wait i sorta understand it now

total?

19

5/19

[acoustic yarrow]

can anyone help with this

[marsh summit]

finally i actually understand it lol

[acoustic yarrow]

how did man get these answers

[marsh summit]

now what about this

LMAOO

[wary stream]

If a channel is busy, don't interrupt people, go to a different, empty channel

[acoustic yarrow]

bro stop saying that. i went to different channels and noone responded

[marsh summit]

4 8 12

3 6 9 12

so

4 multiples of 12 using 3

and 3 multiples of 12 using 4

[wary stream]

But help is still going on, if it's silence for at least 15 - 20 minutes with no help going on, then they can post

[marsh summit]

hey @alpine sable i dont mean to be annoying but any ideas on my question?

[river crescent]

Can I get a simple explanation on how to do this

[marsh summit]

so 7/12

[river crescent]

Hey blue guardian once ur done can u help me

[marsh summit]

OHH

bruh

im a clwon

ok guardian 1 more question hopefully if u dont mind lol

this is like

extremely hard

[quasi sable]

its not hard just a lot of numbers so ill try solving it rq

40 or over means that its everyone in the group 40-49 plus everyone 50 and over @marsh summit

[marsh summit]

yea

[quasi sable]

so you add all those people

[marsh summit]

what i did was

add the 40-49

and 50 and over

together

[quasi sable]

yup

and then you get that number

over 5143

and simplify

this

[marsh summit]

ohh

i tried it but i just assumed cuz it was sucha weird number they wouldnt simplify

[quasi sable]

nahh just simplify it as far as it can simplify

[marsh summit]

2,563/5143

[quasi sable]

yep simplify it from there

[marsh summit]

0.498

?

[quasi sable]

or divide it if u want actually

right

so thats uhh

in percentage

first round to the hundredth

[marsh summit]

i just put it in as 0.498

[quasi sable]

0.5

no u gotta round

[marsh summit]

i did

[quasi sable]

to the nearest hundredth

[marsh summit]

to the thousandath

[quasi sable]

wait

[marsh summit]

yea

[quasi sable]

my bad

lol

[marsh summit]

all g

thank u tho

[quasi sable]

0.498 is 49.8%

[marsh summit]

still got a couple questionjs if u wanna lol

[quasi sable]

ill try

[marsh summit]

ima try this one myself 1 sec

ok question

for this

i add everything up in the 20-29 collumn

for the denominator?

1062

and 648 completed some college

[quasi sable]

wait wait

[river crescent]

For the question I have a vague idea on what I’m doing I know I have to plug numbers Into the outside numbers

[quasi sable]

this ones a lil more complicated

gimme a sec

so its

[marsh summit]

hmm

[quasi sable]

1062+648/4231+4380 @marsh summit

add that up and simplify

[marsh summit]

1710/8,611

0.198

[quasi sable]

yup

19.8%

actually no

[marsh summit]

whats that rounded to thousandath

[quasi sable]

19.9%

bc its 19.85

after 5 you round to the next number

[marsh summit]

it said 19.9 was wrong

[quasi sable]

19.9%

fr?

[marsh summit]

ya

[quasi sable]

lemme check rq

i guess just put 19.85

and see if its right

[river crescent]

When puppas is done can u help me henny

[marsh summit]

wrong

thats so weird

[quasi sable]

then its 19.8

try that

[quasi sable]

idk geometry sorry man

im only helping him because im also working with statistics sadly

but best of luck

[river crescent]

Dang I’m screwed 😂

[quasi sable]

ask the helpers

in a diff channel tho

[strong furnace]

I can help

[river crescent]

A savior

[marsh summit]

19.8

was wrong

[quasi sable]

so wdf is it

[marsh summit]

lmaoo no idea

[quasi sable]

so weird

[marsh summit]

should i give up

[strong furnace]

@river crescent ping me on some other channel if you find one that is not busy

[marsh summit]

wait nyann

can u attempt my question really fast

lol

[strong furnace]

what is the problem here?

I mean

what are you having trouble with

[marsh summit]

well

we added highschool only + some college

so 1710

then added 4231+4380

then put it into a fraction then simplified

[strong furnace]

wait

definition of probability according to classical theory

(preferred events)/(possible events) , right?

[marsh summit]

yes

[strong furnace]

you have the preferred events right

[marsh summit]

yes

[strong furnace]

why do you think possible event = all highschool and college

possible event is something that should be in the question statement(in this case)

[marsh summit]

hmm

[river crescent]

I thought u got off so I found someone else sorey

Sorry

[marsh summit]

idk tbh

[strong furnace]

lets read the problem

atleast the important bit

a random resident who is aged 20-29 is chosen at random

does this not imply something?

[marsh summit]

i think it does

it implies all 20-29 year olds

right

[strong furnace]

yes

[marsh summit]

oh shit

so wrong way

[strong furnace]

what you did it has a name in psychology or something(some bias)

[marsh summit]

so 1710/3184 ?

[strong furnace]

yes

[marsh summit]

ohhh shit

bro ty

whats crazy is that i tried adding that mentally before asking anyone for help and i got 1700 instead of 1710 lol

[strong furnace]

people add 77 and 33 to get 100

this is something similar I guess

[marsh summit]

yea probably

[verbal gull]

Am I free to ask a question?

https://gyazo.com/b7b10602b4331ee595f7da5d0e38b953

[raven crypt]

\

[strong furnace]

what have you tried?

[raven crypt]

help pls

[muted raft]

[verbal gull]

1/2

[strong furnace]

I meant what have you tried in terms of your work , how far have you gone ? how did you get to 1/2

[verbal gull]

I have the equation written out and tried to cancel out and get different numbers

that's how I got the answer above just for f(0) is where I got stuck

[strong furnace]

this does not make much sense to me , do you know what they are asking for?

[verbal gull]

not really was pretty confusing question

[strong furnace]

ok, so you know the function they have given cannot defined at 0

[verbal gull]

all I know is x cannot equal 0

yes

[strong furnace]

what they want from you is a value

that will be the value of f(0)

for a different but similar function

which is defined at 0

but as piecewise function

[verbal gull]

I tried 1

[strong furnace]

such that the function is continuous

now what is the condition for continuity of a function?

[verbal gull]

lim xapproacha f(x) = f(a)

[strong furnace]

now what would be our value of f(0) so that the function is continuous ?

[verbal gull]

just going to take a guess

+/- infinity

since it jumps

[strong furnace]

why are you guessing?

they want a function that is continuous

you know the condition for continuity

and the function is not defined

now you have to define the function such that it satisfies this condition

how would you put that in mathematical terms?

[verbal gull]

I just don't quite understand what you mean.

[strong furnace]

I am sorry but I'll have to let this go, post your problem again so that some1 else might help you out

[wild bay]

y = 2zx
x = 4zy
x^2 + 2y^2 = 1

How do I solve this system of equations?

[thorn kindle]

Y = 2zx

Which means that you can directly substitute

[alpine sable]

Hey AMD

[quasi sable]

someone please for the love of god how do i find the equation for this

[wet monolith]

are the axes not labelled?

[quasi sable]

nope

[remote charm]

License plate tags in a particular state are to consist of 3 letters followed by 4 digits with repeated letters and digits allowed how many different license plate tags can there be in this state?

[quasi sable]

but im pretty sure every unit is 1x or 1y @wet monolith

thats not what im concerned about

i just dont know how to get the equation

[jovial mason]

looks like y=x

[quasi sable]

i forgot all abt slopes and stuff

[quasi sable]

it isnt though

because

[jovial mason]

y=1, x=1 y=2, x=2

[quasi sable]

the line doesnt go through every unit perfectly

it slopes a little

[jovial mason]

its a line of best fit

[wet monolith]

then just pick the best points you can

[jovial mason]

no labes so thats the best eqn that will fit

[quasi sable]

right but a y=x line isnt the line of best fit in this situation

[remote charm]

Well I don’t think I could of solved this 😂😂

[quasi sable]

thats what my answer was before

but i realized that you can find a better line of best fit than that

that goes closer to every point

[pallid hill]

i dont understand whats suppose to go in the first box

[alpine sable]

You can factor out a 2

[pallid hill]

so add 2x to 2x^2?

wait no

[alpine sable]

In the first box put a 2

Then you have x^2 - x - 2

[pallid hill]

oh ok thanks

[alpine sable]

Yw

[clear portal]

Can someone please help me with this

Im totally sure that im doing this wrong

Because im using the distance as the bounds of the integral/sum and inside as well

[clear portal]

Actually i just fixed my answers so this is what I have now

[fierce viper]

Can anyone teach me what is these

[alpine sable]

median- middle value ex. 1,2,3,4,5 3 is the median bc its in the middle

[alpine sable]

mean- is just average -sum of numbers divided by amount of numbers

formulas for the other two

[fierce viper]

I figured out median and mean but i don't know variance and standard variation

[hybrid moth]

What is the exterior angles of decagon?

[alpine sable]

36 degrees

[fierce viper]

How about this? @alpine sable

How to get the mean

[alpine sable]

c 1.4

0x1/5+1x2/5+2x1/5+3x1/5

[hybrid moth]

What is the exterior angle of dodecagon?

[muted raft]

,w exterior angle of dodecagon

[ocean seal]

Results provided by WolframAlpha

Click here to refine your query online
Upgrade to WolframAlpha Pro!

Requested by zslya#7821

[fierce viper]

30

[fierce viper]

@hybrid moth

[hybrid moth]

Thanks

How abt 90-gon?

[fierce viper]

How to do this i can't understand

[minor heath]

exterior angle of a regular polygon = 360/number of sides

[hybrid moth]

How to do this?

[stoic elbow]

can anyone give me a exponential problem for algerbra2 I am trying to make sure that I understand what I am doing

nm

[woeful pulsar]

the sum of the exterior angles

imagine running around the shape, then the sum of the exterior angles is how much you turn

[alpine sable]

Is anyone availiable?

idk if I speeled thaat right

Which points are collinear?

Ping when answered

[shell narwhal]

hello everyone what does a double vertical bar on each side next to a vector mean ? ex: $||A||$

[ocean seal]

ndam500

[covert juniper]

in R^3 a line and a plane must always intersect right?

if they are not parallel

[alpine sable]

?

[woeful pulsar]

do you know what collinear points are?

[woeful pulsar]

usually the norm of the vector

[alpine sable]

I think I forgot

[woeful pulsar]

recall the definition, check your notes

,w collinear points

[ocean seal]

Results provided by WolframAlpha

Click here to refine your query online
Upgrade to WolframAlpha Pro!

Requested by Element118#2437

[alpine sable]

I know it's commas but idk whats the answer to it

[shell narwhal]

@woeful pulsar thank you very much

[woeful pulsar]

what do you mean?

[alpine sable]

is it C, P, and D?

[woeful pulsar]

Well, that's one set of collinear points

are there others?

[alpine sable]

Like they use letters with commas

[woeful pulsar]

yeah, you can say {C, P, D} is a set of collinear points

where is R?

[alpine sable]

R is the plane

[woeful pulsar]

R is not a point

[woeful pulsar]

we are talking about collinear points

[alpine sable]

I think

[woeful pulsar]

How are C, P, A collinear?

[alpine sable]

idk hold up

is it C, p d?

[woeful pulsar]

C, P, D are collinear

but there are other sets of collinear points

[alpine sable]

Here's the 1st choice:

Second:

Third:

Forth:

[woeful pulsar]

Which of them are collinear? @alpine sable

[woeful pulsar]

fourth

[alpine sable]

which I just said

I was just double checking

[woeful pulsar]

ah

okay

[alpine sable]

What is another name for line m?

[woeful pulsar]

so the question is asking which among the 4 given is collinear

[woeful pulsar]

you can use vertices along the line to describe a line

[alpine sable]

is it line D?

[woeful pulsar]

no

D is a point

[alpine sable]

Oh

E?

I mean DE because E isn't a choice

[woeful pulsar]

DE represents the line passing through D and E

is that line m?

[alpine sable]

no?

[woeful pulsar]

how would you describe line m?

[alpine sable]

So DC?

because a line just need 2 points

1st choice:

Second:

Third:

[woeful pulsar]

yeah

[alpine sable]

Fourth:

oh ok

thanks!

[woeful pulsar]

though it looks like you are just guessing answer tho

since you have multiple choice

do you understand why it's DC?

[alpine sable]

yea

Which four points are coplanar points?

[woeful pulsar]

do you know what "coplanar" is?

[alpine sable]

lay in same plane?

[woeful pulsar]

yeah

so which options show 4 points that lie in the same plane

[alpine sable]

A, C, B, E?

[woeful pulsar]

yeah, that's one

[alpine sable]

What are two different names for the plane below?

[woeful pulsar]

???

wait

hold on

[alpine sable]

?

[woeful pulsar]

doesn't it have two correct answers?

[alpine sable]

I only need to choose one

[woeful pulsar]

what

but why did they give you two correct answers

to tell you to pick one

[alpine sable]

bc its a practice bc we have a test coming up next week

[woeful pulsar]

there are two correct answers here

not just one

[alpine sable]

ik

she made it on the foam

[woeful pulsar]

foam?

[alpine sable]

I'll tell u what it is in a bit

What are two different names for the plane below?

[oblique goblet]

Help

[alpine sable]

please don't disturb

[oblique goblet]

How do I solve for a linear term of a polynomial?

[alpine sable]

is it plane A and plane MTV?

[woeful pulsar]

how do 3 points define a plane?

[alpine sable]

triangle

so MVN?

[woeful pulsar]

not really

[hybrid moth]

Need helpp

[woeful pulsar]

think of the plane containing the 3 points

[alpine sable]

it is 3 lines isn't it?

[woeful pulsar]

well

you can define 3 lines from your 3 points

yeah

[alpine sable]

I'll come back to it later

What is a segment in this picture?

MV?

[woeful pulsar]

as in, line segment?

[alpine sable]

yes

[woeful pulsar]

line segments just need to go from one point to another

so yeah M is a point V is a point

[alpine sable]

alright thanks

have a nice day

[flat turtle]

can anyone help me translate this

[alpine sable]

Idk I think its like this

[woeful pulsar]

what have you tried?

[alpine sable]

,tex $\frac{1}{5} (c+5)$

[ocean seal]

Ranok Hui

[alpine sable]

Something like this?

Or $\frac{c+5}{5}$

[flat turtle]

but its asking 1/5 of the sum

[alpine sable]

Sum of c and 5 means c+5

So one fifth means 1/5

So multiply them and you should get it

Also add a bracket for c+5 as you need to multiply 1/5 to c+5, not only c

[ocean seal]

Ranok Hui

[alpine sable]

I think those two solutions should work

[flat turtle]

ok thanks

[alpine sable]

$\frac{1}{5}(c+5)$ or $\frac{c+5}{5}$

[ocean seal]

Ranok Hui

[flat turtle]

i got confused and thought you would divide 1/5 of the sum

thanks

[cinder sundial]

quick question

(1/2)^2=2/4

am i right

[gray isle]

no

[cinder sundial]

well

=2/2

=1

am i right

[gray isle]

what's equal to 2/2

[cinder sundial]

1

1/1=1

[gray isle]

what's with the = before the 2/2

[shrewd sable]

Just because 2/2=1 doesn't mean (1/2)^2 = 2/4

how are they even related

[cinder sundial]

no

ohhh

ohhh

(1/2)^2= 1/4

am i right

[dim flower]

1^2 = 1, 2^2 = 4, therefore (1/2)^2= 1/4

[shrewd sable]

Yes

[cinder sundial]

1^2=1

damn

[dim flower]

yea

[cinder sundial]

damn

[woeful pulsar]

yes

let u=2t

no

can you simplify sin u cos u?

^

[coral remnant]

How would I do this problem?

[alpine sable]

whats average rate of change? its just delta y over delta x isnt it?

you have all the info you need to solve it

[ionic jewel]

average rate of change (kinda) between x=a and x=b of function f(x):
$$\frac{f(b)-f(a)}{b-a}$$

[ocean seal]

bunny

[pastel lion]

Find dy/dx of the function f(x) to get f'(x) then work out f'(2) - f'(x) = 3... I found the answer to be 0.5... Correct me if am wrong

[alpine sable]

No, 1/4

Because $\frac{1}{2}\times\frac{1}{2}=\frac{1}{4}$

[ocean seal]

Ranok Hui

[undone wraith]

Hello you wonderful people! Can some one hold my hand in this question? I am not sure what i am doing to identify a.) pattern and b.) what the finished formula is and c.) how this relates to Pascal's 12th consequence.

<@&286206848099549185>

[clear geyser]

damn thats hard @undone wraith

You'll need some kind of math wizard for that one.

[fiery walrus]

hello i need help doing this by a = 1/2 ap

[indigo adder]

what is this symbol?

[icy pine]

alpha?

[indigo adder]

ok thanks

[smoky barn]

a train travels in a total distance of 68km in a speed of 52km/h

in a total of 20km distance it goes 40km/h

calculate the average of the speed

im confused someone help please

[gray isle]

average speed = (total distance) / (total time)

[smoky barn]

okie

[void siren]

Exponents and powers

[alpine sable]

@smoky barnhow old r u

[smoky barn]

14

why?

I was just confused cuz the question was in my native language

[alpine sable]

kk

[south stream]

When do we use exponent rules? When factoring?

[misty pebble]

The graph of equations y=x^2-14x+49 and y = mx + 48 only intersect once, at x = 1. Find the value of M

I can do these questions normally without the x =1, can anyone point me in the right direction>

[alpine sable]

When x=1 the two graphs intersect, and at their point of intersection their y-coordinates are the same

They both go through the point (1,y)

Solve (1)^2-14(1)+49=m(1)+48

[regal agate]

does anyone know why i get a math error when trying to calculate the prime factorization of 10^(40)? im using a classwiz fx-991ex

[alpine sable]

10=2*5, 10^40=2^40 * 5^40

[alpine sable]

I'm guessing its an overflow error

[regal agate]

i'm currently using the fx991ex emulator for windows.
im wondering if i need to expect the same outcome with the physical calculator

[alpine sable]

Not sure idk about that model of calculator

But you dont need a calculator to prime factorize 10^40

[misty pebble]

@alpine sable ty

[azure jackal]

how to solve this question?

[fading jay]

this ( (x-2) + 3 ) ^50

[void siren]

Can someone pls help me.Its exponents and powers

[fading jay]

simplify (x+1)^50 need coef under x^27

its 50C27

[azure jackal]

?

what 23

thats going to be a huge value

sorry for the late response

i didnt check

[azure jackal]

how?

elaborate

i dont get it

[fading jay]

this is the binomial of Newton (a + b) ^ n, where a = x-2, b = 3

[azure jackal]

ah

gotchu

i think i can take it from there

ty for the help.

[alpine sable]

y’’ + 2y’ + 4y = 1

Anyone know what to sub in for particular solution to solve ;-;

I might be having a massive brainfart, but isn't

$\lim_{n\to\infty} \left(|\left(1\right)^n(1-\frac{6}{n})^{n^2}\right|)^{1/n} = 0$

Idk how to input absolute value signs so they look a little weird

[ocean seal]

Fung

[short arrow]

Anyone know this? 9x - 7i > 3 (3x - 7u)

[woven dock]

,w limit n to infty (|1^n*(1-6/n)^(n^2)|)^(1/n)

[ocean seal]

Results provided by WolframAlpha

Click here to refine your query online
Upgrade to WolframAlpha Pro!

Requested by Biscuit#5208

[woven dock]

Doesn't look 0 to me

[alpine sable]

[rich basin]

i am confsude with the difference between "only if" with "if and only if"

please help <@&286206848099549185>

[woven dock]

"4. If your question has not been answered for a minimum of 15 minutes, you may use the @Helpers tag once. "

[rich basin]

sorry, my bad

[woven dock]

Anyways here's a Khan academy site:
https://www.khanacademy.org/test-prep/lsat/lsat-lessons/logic-toolbox-new/a/logic-toolbox--if-and-only-if

See if that helps

[alpine sable]

can someone please help me with this question?

This is binomial Probability and bernoulli trials

[velvet pelican]

@alpine sable what is the issue?

[alpine sable]

I dont understand why Im getting it wrong

khan academy

bruh

I think Im not getting what it means properly

[velvet pelican]

Ok, so what are you defining the random variable as ?

and which distribution are you using

[alpine sable]

whats a random variable

[velvet pelican]

its like X or Y or whatever you called it

[alpine sable]

umm so is it like X >= 18?

or am I not getting it

[velvet pelican]

yes

but what is the distribution

X~ ?

[alpine sable]

what do you mean the distribution?

[velvet pelican]

what numbers did you use to get P(X >= 18)

[alpine sable]

Ummm I used (20C18)(9/10)^18 (1/10)^2 + (20C19)(9/10)^19 (1/10) + (9/10)^20

[velvet pelican]

what did you get as the answer?

[alpine sable]

1.054....

[velvet pelican]

hmmm

[alpine sable]

yeah something sus happened

[velvet pelican]

check your input into the calculator

because the expression is correct

[alpine sable]

really?

[velvet pelican]

yes

[alpine sable]

oh! Is it 0.6769?

[velvet pelican]

yes

any issues on the second part?

[alpine sable]

hmm I really thought I did that the first time

can you go through it aswell

[velvet pelican]

what have you tried?

[alpine sable]

20C1 x 1/10 x (9/10)^19

[velvet pelican]

that is the probability of missing exactly once whereas you need the probability of missing atleast once

try to find the probability that he doesn't miss at all

[alpine sable]

ohhh

so would it be 1 - (9/10)^20

[velvet pelican]

yes

[alpine sable]

thank you!!

[velvet pelican]

welcome

[alpine sable]

oh wait

I have one more question while youre here

[velvet pelican]

ok

[alpine sable]

11b

im so lost for this one

[velvet pelican]

do you know about geometric series/geometric distribution?

[alpine sable]

yes

[velvet pelican]

its pretty much that, you are basically finding the probability that you the first jackpot is won on lottery that is >= 20

which is the same as not winning the jackpot in the first 19 lotteries

[alpine sable]

ohh

umm

wait so I dont get what to do still

sorry

[velvet pelican]

well you need to find the probability that you don't win the jackpot in the first 19 times

what is the probability of not winning the jackpot?

[alpine sable]

0.988

[velvet pelican]

yes

so what is the probability of not winning the jackpot in the first 19 times?

[alpine sable]

0.988^19

?

[velvet pelican]

yes

that should be the answer

[alpine sable]

the answer says 0.78549

i got 0.79502...

did they make an error?

[velvet pelican]

no

[alpine sable]

did I make an error?

[velvet pelican]

my explanation is incorrect

the jackpot increases after you make the draw

so you need to have >= 21 lotteries

which means you need the chance of not winning the jackpot 20 times

[alpine sable]

ohhhhh

yes I got the answer now!

i see i see

thanks

[velvet pelican]

welcome

[alpine sable]

hello, I hope it is open here, I have a combinatorics question

how many binary string (consists of 1s and 0s only) of length 10 can be made if no 4 consecutive 1s is allowed? thanks in advance

I know it is similar to fibonacci sequence if it was no 2 consecutive 1s, but I can't find a way for this one

[alpine sable]

try using recursion

let f(n) be the number of ways to make a binary string with length n such that it has no 1111's

f(n)=f(n-1)+f(n-2)+f(n-3)+f(n-4)

[alpine sable]

if n>=4

[alpine sable]

to derive this we can do casework on how a string of length n can start off

0
10
110
1110

you can put a 0 down first, and you're left with a string of 9
a 10 first, and you're left with a string of 8
etc

use the base values
f(1)=2^1
f(2)=2^2
f(3)=2^3
f(4)=2^4 -1

thank you I think I got an idea now

umm I still have doubts regarding the relation

cant see why f(n) = f(n-1)+f(n-2)+f(n-3)+f(n-4)

so the only restriction we have is that we can't have a group of 1111's

if a string of length 10 starts with a 0, there are f(9) possible strings

if a string of length 10 starts with 1,0 there are f(8) ways to fill out the remaining 8 spots

if a string of length 10 starts with 1,1,0 there are f(7) ways to fill out the remaining 7 spots

if a string of length 10 starts with 1,1,1,0 there are f(6) ways to fill out the remaining 6 spots

and a string of length 10 can't start with 1,1,1,1

okay I think it is clear now

thank you very much, never knew this technique

I was thinking some kind of defining f(x,y) number of the string of length x with y 1s on the end

[south tangle]

Math isn’t fun

[scarlet spire]

it is when you understand it all

---

quick question:

restrictions on a variable in a rational expression...

are the restrictions only for when the denominator = 0 or also when the numerator = 0?

[alpine sable]

the denominator can't be 0, because that would imply a division by 0

it's fine if the numerator is 0

0/7 for example is perfectly well defined

[scarlet spire]

ok thanks

[rustic lodge]

I'm a bit confused as idk how to use any trig with iscosceles triangles, so I'm not sure where to start

[woven dock]

Oh, you can draw a perpendicular bisector on the line XY and a segment of it will be the height of the isosceles triangle

With base XY

[cinder shard]

Hi I need help with my homework:

We need to confirm the identity

but I'm not sure which one to use for this one?

[alpine sable]

on the left hand side, multiply the numerator and denominator of the fraction by (1+cosx)

[tiny field]

The parabola y(x)=b-x^2 and y(x)=x^2-b have a area that is 3 area unit. Solve B. How do I do this using integrals?

English is not my native but what im trying to say is that the two lines creates an area of 3 area units. Im guessing in means 3 squares in total on the paper

[shell widget]

hmm maybe, the area between the two curves is 3 unit^2?

is that what u mean?

and they're not lines, they're curves or parabolas

[tiny field]

A=3

[alpine sable]

do yk integration?

[tiny field]

I just don't now b and a

yea a little

[alpine sable]

b and a are the common solutions to both equations

[tiny field]

If i look at the x axis I get b and A

a*

But I don't know how to get those thus I cant solve b

[alpine sable]

a and b are where the graphs cross the x axis if im right

[tiny field]

YEs

it should be

This is kinda what It could look like, But i do not know a and b and I need to solve B in the functions

y(x)=b-x^2 and y(x)=x^2-b

[shell widget]

First find where the both parabolas intersect

Set b - x^2 = x^2 - b

Solve for "x"

Tell me what u get

[shell widget]

Okay good

Now notice that b must be positive, because we can't put a negative number inside a square root

[tiny field]

Yes

[shell widget]

So let me show u what u have

[tiny field]

okey

[shell widget]

btw sqrt(4) = 2

so 2/2 = 1

so you just have +-sqrt(b)

[tiny field]

okeu

[hollow fable]

8

[tiny field]

So +-sqrt b

[alpine sable]

yes

[tiny field]

is the points

[shell widget]

And you know the area b/w these parabolas is 3

So what you have is $\int_{-\sqrt{b}}^{\sqrt{b}} [(x^2 - b) - (-x^2 + b)] \dd{x} = 3$

[ocean seal]

Sup?

[alpine sable]

integrate one curve and double that it equals 3 cos theyre both symmetric abt the x axis

[shell widget]

Or that

[alpine sable]

yea

[shell widget]

so now simplify and integrate

and solve for b

[tiny field]

-0.541?

[shell widget]

whats in the limit?

cube root of b?

[tiny field]

I dont know

[shell widget]

im asking about this

[tiny field]

yea

What do you mean by limit

[shell widget]

nvm

[tiny field]

But that cannot be correct since b needs to be positive

[alpine sable]

that looks correct

[tiny field]

yea

[quaint trout]

No

[steel osprey]

Oh

Sad

[shell widget]

hm I think multiplying my integral by -1 will fix it

but anyways you got it done

nice

[steel osprey]

Why you little

@shell widget

[shell widget]

Yes?

[steel osprey]

Why you little

[shell widget]

Hello there

[sly mantle]

@shell widget @steel osprey @quaint trout msg logs show y'all ghostpinging, try not to do that

[shell widget]

I did that to annoy him

And that's it

Sorry!

[quaint trout]

rokabe trolling

[shell widget]

since he annoyed lunasong

[quaint trout]

But I appreciate your support

[sly mantle]

@quaint trout https://i.gyazo.com/e98b6b5378521b2d72fec86016876d2d.png

[shell widget]

xd

[quaint trout]

I know the logs say that. I mean the reprimand is trolling.

I did nothing wrong. There is no response to a question about ghost pings that does not involve ghostpinging the questioner.

[sly mantle]

nani

[steel osprey]

Hmm where did u get that log

[limpid spade]

'why you little' that's very rude

[steel osprey]

Oh idk

I'm not an american

I'm bri'ish

[quaint trout]

And homophobic. We all know what the following word would have been. Should be banned.

[alpine sable]

A General arranges his soldiers in rows to form a perfect square. He finds that in doing so, 60 soldiers are left out. If the total number of soldiers be 8160, find the number of soldiers in each row.

please help

[glass lichen]

the 8160 are formed into a perfect square and a group of 60 remaining

[quaint trout]

If there are n soldiers in a row, how many soldiers are there in the square?

[alpine sable]

so what do i have to do

[quaint trout]

Answer my question

[steel osprey]

Well develope a square root

[alpine sable]

idk

[quaint trout]

If there are 2 soldiers in a row, how many soldiers are there in the square?

[alpine sable]

2

[quaint trout]

No

[alpine sable]

bruh

2x2=4

4?

[quaint trout]

Yes

If there are n soldiers in a row, there must be n rows

[alpine sable]

ok

[quaint trout]

To make a perfect square

[steel osprey]

Then 2x2=4x4=16

[quaint trout]

So if there are n soldiers, how many soldiers are there in a square?

Please ignore communist

[steel osprey]

Oh i wronged again

[alpine sable]

n^2

n2

[quaint trout]

Yes, don't help if you can't do basic arithmetic, thanks

@alpine sable yes!

[steel osprey]

w̶h̶y̶ i̶ f̶a̶i̶l̶e̶d̶ m̶a̶t̶h̶

[vague coral]

🗿 🗿 🗿

[quaint trout]

Now if there are 8160 soldiers and all but 60 are in the square, how many are in the square?

[steel osprey]

i have reached komedy

[alpine sable]

816-^2

[quaint trout]

What

[alpine sable]

8150^2?

BRUH

[quaint trout]

No

Did you even read what I asked?

[alpine sable]

8160^2?

yeah i did

OH

[quaint trout]

If you did and you thought that was the answer, I'm astounded

[alpine sable]

OH

60

60 are in the square

[quaint trout]

No. 60 of the 8160 are NOT in the square

The rest are in the square

[alpine sable]

then what are

[quaint trout]

The rest

How many is that?

[alpine sable]

what the fuck?

[quaint trout]

...

[alpine sable]

ur confusing me

[glass lichen]

Have you read the question?

[alpine sable]

Yeah I have

[quaint trout]

If I have 5 apples, and I put all of the apples except 2 in my lunch bag, how many apples are in my lunch bag?

[glass lichen]

so why did you think 8160^2 was remotely right?

[alpine sable]

3

[quaint trout]

Right

Now you have 8160 soldiers. And all but 60 of them you put in a square. So how many of them are in the square?

[alpine sable]

so do i 8160-60

[quaint trout]

Yeah

[alpine sable]

8100

[quaint trout]

So, to summarize. If we let n be the number of soldiers in a row, then there are n^2 soldiers in the square. And based on the given info, there are 8100 soldiers in the square.

So let n^2 = 8100

Then you solve for n

[alpine sable]

so how do i solve for n

bruh

this is square roots

[quaint trout]

Yeah

Do you know how to find it using square roots?

[alpine sable]

i know how to find square roots

such as

square

[quaint trout]

square rooting is the inverse operation of squaring

So if you have x^2, you use the squareroot to find x

[woeful pulsar]

|x|

[ocean robin]

hey guys kinda lost on doing the inverse laplace os this

can anyone help me out?

[glass lichen]

dont spam

Oh it's a test

<@&268886789983436800>

[ocean robin]

<@&268886789983436800>

[sly mantle]

👢

[fading zephyr]

thanks

[glass lichen]

[alpine sable]

You are spamming channels

multiple

[glass lichen]

Rokabe or Edd if you're still here, exact same question

[alpine sable]

ah, my bad then

[sly mantle]

[alpine sable]

Anyways, is this a test 🤔

[glass lichen]

Yeah and given someone has said it's a test question. . .

[alpine sable]

I think helping with a test is against our policy

[ocean robin]

dude just google volume of the cylinder

and use the formula

[glass lichen]

Or just study

[alpine sable]

Did he got banned?

[sly mantle]

b&

[ocean robin]

idk if im allowed to post m yquestion again

[sly mantle]

go ahead

[ocean robin]

since it got pushed up by all this

https://cdn.discordapp.com/attachments/490557019623915520/843851520294125608/unknown.png

can anyone help me out? kinda lost on doing the inverse laplace of this

[gray gorge]

Factor it, pull it apart using partial fraction decomposition and apply table values while keeping linearity in mind

,w partial fraction expansion (2s+10)/(s^3-s^2/2-s/2)

[ocean seal]

Results provided by WolframAlpha

Click here to refine your query online
Upgrade to WolframAlpha Pro!

Requested by Rijinaru#5601

[alpine sable]

what are practical applications

[pale terrace]

is this channel in use

Determine the equation of the quadratic function, in the form y = ax^2 + bx + c,
that passes through the point (3, −10) and whose tangent lines at x = −1 and
x = 2 have slopes 11 and −7, respectively.

I need help starting this

[woven dock]

Sub, sub sub?

(-10)= 9a+3b+c

First equation

That's a start for ya :D

[sand moth]

can someone help with that 😅

[woven dock]

Oh, nice one calixooooooooo

Do you know how to find the gcd of the denominators?

Waitt

Shouldn't it be LCM

Haha

My bad

[sand moth]

wait a second haha

[woven dock]

Anyways we have 2x, x² and 3x

So.........

[sand moth]

yes but...idk how to find the dominator from x²

haha sorry my english is not that good

[woven dock]

No problem!

Like x² and 2x, we can find LCM as 2x²

Do you know the short division method for three numbers to find LCM

It's useful :D

Hello dldh06

[sand moth]

aaaah what is LCM??

[woven dock]

Lowest common multiple

[sand moth]

aaaaaaaaah

[woven dock]

Least common multiple

Whatever it is called

[sand moth]

ok ok

so.... the

[pale terrace]

thanks

[woven dock]

Do ask here if you still need help :)

The Least common multiple will be 2x² for 2x and x²

[wary stream]

This is acceptable for 2 fractions, but what I like to do is multiply each denominator with the missing denominators to get a common denominator. So for example the fraction with the denominator of 2x, it's missing a $x^2$ and 3x so I would multiply that denominator with that. So for the first fraction, $2x * x^2 * 3x$, would be the new denominator for that fraction. @sand moth

[woven dock]

Nice one!

[ocean seal]

dldh06

[sand moth]

aaaaaaah okay.....

[pale terrace]

is there a way I can put that equation into a form that I can easily plug in x,y,m and solve b? Because I am given the tangent so it will be easy to find m

[sand moth]

wait a second

[sand moth]

thank you very much

[woven dock]

Yea, you can use the fact that the slope of y=ax²+bx+c is 2ax+b for all x

[pale terrace]

oh I completely missed that, thanks

[jade portal]

@woven dock

[wary stream]

@sand moth So what you can do instead of finding lcm or gcd or that stuff, just multiply the denominator with the other fraction denominators. Sometimes you'll end up with messier fractions but in the end, you'll most likely get the correct answer, depending on your simplification skills

[jade portal]

whats easier calculus and vectors or advanced functions

[wary stream]

That depends on how well you can understand the material. All of them are pretty difficult, in my opinion

[jade portal]

ok thanks

[woven dock]

I found a video talking about finding the lcm of monomials if you are interested :)

https://virtualnerd.com/algebra-2/rational-functions/add-subtract-expressions/add-subtract-different-denominators/monomial-least-common-multiple-example

[sand moth]

thank you 🙂

[harsh acorn]

$$(1 - \sqrt{2} )(x - 3) > 2\sqrt{8}$$

[ocean seal]

Hyl1s

[harsh acorn]

i tried to simplify it and still cant find x without putting numbers there

How can I solve this without putting numbers there?

[gray isle]

expand simplify, isolate x

[raven spire]

plz help

[woven dock]

I like it when tonnes of questions bombard #help-0 and many people are helping at the same time

So, is it d²y/dx² = x²/10 with y(0)=0 and y'(0)=(0)

[raven spire]

yeah

[woven dock]

Okay, let's integrate both sides w.r.t. x

And we get dy/dx = x³/30 + C for some constant C

So, is that what you got?

[raven spire]

oh ok

[woven dock]

Your turn!

What to do next?

[raven spire]

then integrate again to get x^4/120 +c1x+c2

[woven dock]

Nice!

Then we can use the initial conditions to find the c1 and c2

Hello hoodie

This channel is currently occupied

[raven spire]

ok

[woven dock]

Try to "mark as read" the whole server

And wait for a few minutes to see whichchannel is not active

[sturdy plume]

for part B

why am i allowed to divided by e^-2x

in order to find the solutions

?

[shell widget]

the exponential function e^x or in your case e^(-2x) is never equal to 0

so you are allowed to divide

[alpine sable]

Anyone can help me ?

What is this method

[limpid spade]

what do u need to solve

[alpine sable]

Pythagoras and the theorems

[limpid spade]

u need to prove the pythagoras theorem?

its occupied delirium

[alpine sable]

I show you an example

[elfin trail]

yo guys

[limpid spade]

i cannot grasp what u need to solve

h, B, b,d, D ????

[elfin trail]

if you have a square that its sides have unknown values

and fold it in half so it becomes a recentagle, with a perimeter of 24cm

whats the formula to solve for the squares perimeter?

isnt it just p(2)

[spice lintel]

where can i ask compiuter science questions?

[spice lintel]

no, only half the sides are halved. the other half stay the same length. think abt that

[elfin trail]

oh yea

so it would be

b = 8

for the square

[wary stream]

Is it somehow related to math?

[spice lintel]

kinda

max flow problem @wary stream

[meager tundra]

can anyone help ?

[stone isle]

have you read through them

[alpine sable]

can anyone help me with this question?

[meager tundra]

yes maybe d ?

[stone isle]

yes

[meager tundra]

it can also b

am i wrong

[heady sequoia]

Do the determinant manually, and then try to aimplify

If you get stuck lmk

[meager tundra]

ye i got it

[meager tundra]

can anyone remind me that

how should i solve this

[stone isle]

go through each and see if it's true?

[alpine sable]

yep, you should be able to just eye it if there's nothing other than the graph

[languid ore]

Can someone help me in question 4

[meager tundra]

so it would be C or ?

[alpine sable]

idk do it yourself

[meager tundra]

ty

[sullen imp]

Solve for x

[keen fable]

put as n the numbers that are less or equal than to 4 and more than -2

[alpine sable]

wut?

[remote charm]

A restaurant has 8 apatizers 12 main courses how many ways can a person order a two course meal.
is it just 8 times 12 times 2?

[hybrid copper]

you have two equations, -2 < n + 3 and n + 3 <= 4, then solve both separately for n. The bigger solution is your upper and the smaller solution your lower bound

[sullen imp]

channel occupied lol

[hybrid copper]

from there, list every integer

[alpine sable]

what u mean

idk the answer

-2,-1,0,1,2,3,4

thats what i put

[sullen imp]

Solve for x

[alpine sable]

bruh wtf

[hybrid copper]

I'll try and answer DOOM first

[alpine sable]

ok

[sullen imp]

thanks G

[void siren]

Is my ans correct?

[hybrid copper]

You already tried to exclude 7^x-1

I've got your sol, don't worry

[void siren]

[hybrid copper]

was here before you

[sullen imp]

i tried excluding 7^x, hol up lemme try that

[hybrid copper]

You have access to logarithms, do you?

[sullen imp]

sure