help-0

[alpine sable]

Just post your question. People will come

is there a integral of xtanx ?

[rigid smelt]

yes, just not very nice

and its not in terms of elementary functions

[alpine sable]

really?

can u show me how to?

[rigid smelt]

i dont really know how to do it, and dont really remember the result, but i remember it was a complex expression in terms of a non-elementary function

[alpine sable]

i was told that it is not able to integrate

it is not found yet i mean

my maths teacher told me

[rigid smelt]

hmm lemme find the result on wfa

,w integrate xtan(x)

[ocean seal]

Results provided by WolframAlpha

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

Requested by waler#0265

[alpine sable]

dont really understand it

thx btw

[rigid smelt]

neither do i, but yeah

[alpine sable]

u gradute?

[rigid smelt]

no, not yet

[alpine sable]

can i dm u?

[rigid smelt]

nah, i'd prefer if its kept here, so someone might also come and help solve/answer

[alpine sable]

k

i want to another answeer

is there a definition to dividing by 0?

[upper kayak]

it's undefined

[alpine sable]

i know that

i mean canit ever be difined?

[upper kayak]

probably not

[rigid smelt]

well if its undefined then why would there be a definition for it

[upper kayak]

at least not with our mathematical system

[oak chasm]

@alpine sable See https://en.wikipedia.org/wiki/Division_by_zero.

[vale wigeon]

you can define division by zero to be anything you want but it'll come at the expense of nice properties like the distributive law breaking down

[alpine sable]

ok then

thx

i was looking forward to define it

[upper kayak]

lol

[peak glade]

i was given this question

and this is my working out

the answer is 1/6 and im not sure where i went wrong

[lime crescent]

I need help for a game project (again). I need a way to convert the relative angle between two vectors into a coordinate space that isn't normalized.

Basically, the player can aim in any direction, and move in any direction, and I want the strafing animations to play based on the player's motion relative to where they are facing.

The coordinate space for the strafing animation blends has a domain and range of [-1, 1], and so I need the resulting conversions to not be a normalized vector, because the coordinate -1,1 would be the strafe_left+forward animation. A normalized vector in that direction wouldn't have those coordinates.

[pastel idol]

this channel free?

Anyone knows how to calculate cot on ti-84?

[vale wigeon]

cot = 1/tan

[peak glade]

pls help me with my question 😅

[pastel idol]

i become 1/30 with tan^-1 and 99.23.... with tan

how to go to the 60 degrees (pi/3)

[vale wigeon]

i said 1/tan, not inverse tan.

cot(x) = 1/tan(x)

[pastel idol]

my mode on my calculator is in degrees

[brittle grove]

hi ann

Triangle PQR is inscribed in a circle where QR = 14 cm is the diameter of circle. Find the length of PQ.

can u help me with this

[vale wigeon]

@brittle grove not enough information

@pastel idol it appears that you asked a question other than the one you wanted answered

[brittle grove]

can you add data on you own to complete the question? I want to understand the theory behind this question. Thanks ma'am

like I know the angle qpr will be 90°

so is Pythagoras theorem enough to solve this question

[vale wigeon]

if i'm allowed to add my own data i might as well just declare that PQ = 4.2069 cm exactly, and there will be no counterargument to that

yes, angle QPR will be right. that's all you can say.

yes, if you knew PR, you would be able to find PQ via the Pythagorean theorem.

[brittle grove]

ok thank you ma'am 😊🙏

[vale wigeon]

you're welcome...

[alpine sable]

that is so awesome

[pastel idol]

I wanted to know how they got from sqrt(3)/3 to cot pi/3

[vale wigeon]

then you should have asked that

anyway, sqrt(3)/3 happens to be one of the standard trig values

you might have been given a table that lists the values of trig functions at 0, pi/6, pi/4, pi/3 and pi/2

(or 0, 30, 45, 60, 90 degrees)

in general, you can almost always rewrite cot(x) = a into tan(x) = 1/a

(almost always, because a=0 requires special consideration.)

[untold lynx]

can anyone help me with part c or d or both?

wait a sec

technical difficuultioes

here

part c or d or both

thx a lot

[jovial knoll]

does anyone know if the logic course on brilliant is worth it, or is only for kids

[tranquil crag]

. A loan of $5000 is to be amortized with equal quarterly payments over a
period of 5 years at j4 = 12%. Find the concluding payment if the quarterly
payment is rounded up to a) the cent; b) the dime.

[gray gorge]

What's j4

[tranquil flint]

sqrt(x^2 + y^2) = y/x

how do i isolate for y

[alpine sable]

Two similar triangles have areas 9cm2 and 16cm2. If the base of the smaller triangle is 3cm, find the base of the larger triangle.

how do u do that^

[tranquil crag]

8?

dunno I forgot my pen and paper

[tranquil flint]

its 4

@alpine sable

cuz

similar triangles have same ratio in base and height

the second triangles height is 6

3/6 = 1/2

and

4/8, which is the other triangle also has a ratio of 1/2

whioch means its similar

and the area is 16

now someone hlep me do my isolaotin bs plz

[alpine sable]

thank you<3

[untold lynx]

help plz

[woeful wave]

uhm can somene teach me how to do age linear problems?

im kiida having a hard time with my lesson on that

[tranquil crag]

can I have the question

[woeful wave]

yes

[tranquil crag]

mm?

[tranquil crag]

send help

[woeful wave]

waht grade

immstill grade 7...

[untold lynx]

same

[tranquil crag]

second year college here

Maybe I can help you?

[untold lynx]

hm

[untold lynx]

here help me

plz

[woeful lotus]

quick question: how would you calculate the number of numbers that are a multiple of a number in a range of numbers,
okay that sounds confusing, heres what i mean, i have a range of lets say 5 to 50, i want to know how many numbers inside that range are a multiple of 4,

is there some sort of equation to do so?
thx

[rotund steeple]

do you mean multiple of 4?

[tranquil crag]

sorry I only know Fibonacci

[untold lynx]

look at what diginacci is more carefully

its explained

[woeful lotus]

ah yes -- my math terminology isnt very good ;-;

[untold lynx]

in the question

[rotund steeple]

also lets move to a differenc channel

[woeful lotus]

oh i found an answer on the web, 0.o quiet simple for how it works, feels dumb for asking .-.

[topaz meadow]

can somebody help with this one?

[marsh sinew]

hey I'm really stressing about this :< i don't know how and i wanna know how to fit the data into linear equation. :<

[alpine sable]

Suppose the linear equation to be y = mx + c. Then put y and x values of any two points

Then solve two equation simultaneously to get value of m and c

[topaz meadow]

how do I find theta of (-√3 + i) ? x=-√3 y=i r=√2 but idk how to find theta

[alpine sable]

r is not root 2

[vale wigeon]

the modulus of -sqrt(3)+i is not sqrt(2).

if you wanted to write -sqrt(3)+i as x+iy (with x and y real) then y is 1.

[topaz meadow]

is r=2i?

[alpine sable]

Try to look at -sqrt 3+i as a vector

tan theta= -1/sqrt 3

[vale wigeon]

#help-0 is a dumpster fire most of the time j0

[alpine sable]

You are asking for specific values of a function not the function itself please rephrase ur doubt

[jaunty silo]

[alpine sable]

If y is the height, x is the time then I guess function should've been y = 1.2 * 2^(x/10)

Yea exactly

X is number of days to be exact

Cos you get number of 10 days

Cos it doubles every 10 days yeah?

Yes

It's just a gp.

f(5) should be 1.2 times 2^1/2

Yea but it DOUBLES every TEN days not every day

[rotund steeple]

whats k psi suppose to be estimating @mental meteor

[vale wigeon]

theta, presumably?

[rotund steeple]

ok got it, so what did you try @mental meteor

also i presumed the MSE in this case was $E_{\psi} ((\theta - k\psi)^2)$

[ocean seal]

JohnDS

[light coyote]

this is the data I currently have

[glass lichen]

Have you solved the DE?

[light coyote]

oh... no not yet

lemme do that quickly

[glass lichen]

cause then it's just solve for the constants

[light coyote]

log(theta) = -kt

how do I use that data?

[glass lichen]

$\ln\abs{\theta}=-kt+c$

[ocean seal]

Mosh

[glass lichen]

well you know (0,80) and (10,60) is on the curve

[light coyote]

yes

wait what? 0,80 and 10, 60 ?

[glass lichen]

$\theta (t)=Ae^{-kt}$ the first point shows that $A=80$

[ocean seal]

Mosh

[light coyote]

o right yes yes

[glass lichen]

time 0 means temp 80, time 10min means temp 60

[light coyote]

yupp

[glass lichen]

$60=80e^{-10k}$ to find k, then evaluate $\theta (25)$

[ocean seal]

Mosh

[light coyote]

ahh ok find k then solve for 15 mins

thanks

[glass lichen]

15 further minutes

so 10+15

[light coyote]

o right, didn't read that part properly

[light coyote]

umm one doubt

e ^ (-kt + c) = theta

[light coyote]

How did u get that constant in front of e ?

[glass lichen]

$e^c\cdot e^{-kt}, e^c\in\mathbb{R}$

[light coyote]

ahh

[ocean seal]

Mosh

[light coyote]

right then replace e^c = A

[glass lichen]

yeah

[light coyote]

alrighty, I'm getting 38.9*C for 25 mins

[glass lichen]

double check rounding

[light coyote]

its 38.97 ~ 39

[glass lichen]

38.97 ~ 39.0

[light coyote]

Thank you 😊

[drowsy scroll]

How would I plot

$y =\frac13x + 4$

On this graph:

[ocean seal]

Quadro

[drowsy scroll]

How to make a line with the given equation

[manic quail]

One way would be to get 2 points, and connect them with a straight line.

[drowsy scroll]

Yeah where do i get 2 ppoint

points

[manic quail]

plug in 2 random values for x into your equation.

[drowsy scroll]

Oh it doesn't have to be specefic?

[manic quail]

No.

But they should not be too big.

Because how are you going to fit them into your coordinate system then..

[drowsy scroll]

yes because this graph is small

wait

is this a grap of a coordinate

graph*

[manic quail]

Yes, that's a coordinate system.

[drowsy scroll]

I meanr or* here sorry

ok thx

[manic quail]

This would be another way to do it. It's usually faster.

$$y=\frac{1}{3}x+4$$

[ocean seal]

𝔙eryhappyperson

[drowsy scroll]

Oh, wow. I read this message late sory

[south stream]

Why is the formula for permutation

$$P(n, r) = n!/(n - r)!

[velvet pelican]

(you need to have $ at the end)

if you start with 2 $ you need to end with 2 $

[ocean seal]

Kiara Blythe

[velvet pelican]

Well, if you select r items from a set of n items (with order mattering) the total number of possibilities are $n \cdot (n-1) \cdot (n-2) \dots (n-r+1)$

[ocean seal]

Frosty

[velvet pelican]

which is the same as n!/(n-r)!

[alpine sable]

does this look right?

[limpid spade]

pls type what you have

[alpine sable]

uh

sure

ln(4x^2+7x+2)sin(7x^3)

second step

sin(7x^3)*8x+7/4x^2+7x+2+ln(4x^2+7x+2)*21x^2cos(7x^3)

[limpid spade]

yes

now try to simplify it if its possible

place parenthesises in the denominator

and also nominator

[upper spruce]

I need help

Anyone there ?

@velvet pelican can u pls help

<@&286206848099549185>

[alpine sable]

i've got math homework

which consists of 28 questions brh

[cyan owl]

help

[short jacinth]

same

[cyan owl]

3x-2y=-16. you need to find the slope intercept and y intercept

help

,help

[ocean seal]

A brief description and guide on how to use me was sent to your DMs!
Please use ,list to see a list of all my commands, and ,help cmd to get detailed help on a command!

[cyan owl]

ask 3x-2y=-16. you need to find the slope intercept and y intercept

[primal socket]

could i get some help with this one

[willow panther]

find gradient of graph

[cedar geyser]

hello

I have a dumb question on p-values

If i run a linear regression and the result is of this form

Then I look at the P-value

How is it possible to have a high P-Value for an obvious linear relationship?

if someone can figure out this, feel free to @ me

seems that the null hypothesis, that there isn't a linear relationship, should obviously be rejected

and so, the p-value should be quite small

how do i delete someone else's message

[mystic dome]

u shall be mod for that

[graceful bloom]

Sorry for that

[alpine sable]

Idk if anyone knows this stuff but I need help. This is history. Does what I have look right or wrong?

[shell widget]

C seems more likely.

For two.

[alpine sable]

For which question

[shell widget]

Q2.

[alpine sable]

Ok

I was thinking that as well

[shell widget]

C as well for 1.

Both are correct.

[alpine sable]

Okay

Could u help me with some more of these type of questions

[alpine sable]

is this even a math question

can be

but idk

Read what I said sir

br

this is history

Yes

and this server is a math server

[alpine sable]

go to homework server if u wanna

know more

cuz this is math

[tawny lion]

i think u should focus on your math hw

this channel was unoccupied

[alpine sable]

done

i did my homework

[solemn cobalt]

Can someone help me with B C and D

[alpine sable]

bruv

[tawny lion]

@solemn cobalt sure

[solemn cobalt]

Thank you

[tawny lion]

i can't see it that well though, do you have a clearer photo

wait

it says 1 mark

lol i can't help you if it's a test

[solemn cobalt]

No no it’s an assignment read the top

Does this look any better ?

[alpine sable]

@cedar geyser for your test what is your significance level

whether you reject the null hypothesis or not depends on ur p value corresponding to the significance level you are conducting your hypothesis test

[cedar geyser]

yeah, let's say my significance level is 0.05

[alpine sable]

and your sample size?

you can just refer to a table of critical r values

https://www.statisticshowto.com/tables/ppmc-critical-values/

I assume you're conducting a 2 tailed hypothesis test

if the magnitude of your r value if larger than the critical R value inside of this table with the corresponding sample size and significance level you reject the null hypothesis

[cedar geyser]

So, I have 45 observations

that still implies I reject at the 5% confidence level

[alpine sable]

e

[cedar geyser]

right, because my threshold is .288 on this table

also, this table is cool, thank you

[alpine sable]

yes, you're welcome

for values of alpha that are a bit more specific there's ways of calculating the corresponding critical r value but I think that's beyond the scope of the question asked so I'll just leave it at there

its a level of significance btw not the confidence level but yeah if your alpha is 5% then you'd reject

[cedar geyser]

gotcha, thanks CI is something else

So help me understand this

Why would the P-Value threshold increase with a lower significance level

[little nebula]

cuz yes

[cedar geyser]

?

[little nebula]

cuz yes

[cedar geyser]

are you just trolling

[alpine sable]

it actually increases?

[cedar geyser]

So on that table

[alpine sable]

for smaller significance levels the threshhold r value if u will, actually increases

[cedar geyser]

right, the lower the sig level, the higher the p val threshold, unless i'm reading incorrectly

[alpine sable]

yes

if you think about it in an intuitive perspective, it becomes unlikely and harder to reject the fact that there's correlation the higher the r value

[cedar geyser]

oh, wait what're the values on this table

p-values, r-squared or correlation coefficients?

[alpine sable]

correlation coefficients

[cedar geyser]

so, the m in y = mx+ b?

i'll google

[alpine sable]

no, they're the pearson product moment correlation coefficients

i thought that's what you were using

so -1<=r<=1

[cedar geyser]

right, okay, so corr coff

isn't a p-value different though

[alpine sable]

yup sorry i misread

if your p value is less than the significance level you reject H0

[cedar geyser]

Yeah, so if you look at the graph I posted, there's an obvious linear relationship, right?

[alpine sable]

hmmm, it may look linear but depending on how strict your standards are; your significance level, you'll just have to accept h0

because the thing about statistics and hypothesis testing is that it takes the human element away from analysing statistical samples of data

you rely on mathematical models to make the most objective and strict conclusion as possible,

and make the most valid inference about the data you are analysing

[cedar geyser]

understood, but to add context, i'm modelling something that has a known linear relationship

[alpine sable]

anyone here good with grade 12 advanced functions and can actively help me rn?

then you've made a type 2 error

[cedar geyser]

i mean, only because the output number is 0.34

right?

I suppose i'm just trying to dig into the calculation of the p-value and understand why I would get something like 0.34 when the data shows a clear linear model

I wouldn't be making a type 2 error if this number were, 0.03 for example

just trying to understand how 0.34 could possibly be produced

I saw your messages Shiro, i appreciate your help, i'll keep digging

❤️

[severe panther]

can someone help me find the surface area? <33

its easy compared to what you all do here

[forest knot]

Anyone know what this notation means? for example, what would be N^3?

[ashen palm]

can someone help me

[alpine sable]

How do I set up 9?! <@&286206848099549185>

[alpine sable]

https://gyazo.com/6130882f9cbd1819c6600077a2e3fed4 how do i solve this

[harsh swallow]

they want you to find j @alpine sable

[alpine sable]

Holy shit

how many questions gonna be posted in the span of 3 seconds

3

indeed

[alpine sable]

Just use pythag

yeah what katharine

posted

yk how do mine?

[harsh swallow]

1500 interest^quarters = 3000

[alpine sable]

hmm?

[harsh swallow]

every quarter

there's 12% interest

so you start with 1500

and 1 quarter

1500 * 1.12

2 quarters is the answer to the previous quarter * 1.12

so 1500 * 1.12 * 1.12

etc etc

and now you get given the end answer you want to have

so instead of amount of quarters

[alpine sable]

Bro can u pls help

Idk how to do it

Pls

I gotta finish it in 5 mins

[harsh swallow]

you know that you want to get 3000

pythagoras with 5 and 2.5

but the 5 is the long hypothenus side

[alpine sable]

Can u pls set up the equation 😭

I’m so screwed

Test?

[velvet pelican]

sounds like a test

[alpine sable]

Naw

ok

It’s a work due at end of clas

why would you postpone it 5 mins before the end of class 😢

[harsh swallow]

knowing that you want 3000 you get 1500 * 1.12 * 1.12 * 1.12 * .... * 1.12 = 3000

which translates to 1500 * 1.12^x = 3000

and then you just solve for x

[alpine sable]

can you dm me about this

[harsh swallow]

that make sense?

[alpine sable]

yes and no

ok Is question 9; 5 or 6 on that sheet?

Goformative is fresh

[alpine sable]

Huh

just h=\sqrt{5^2-2.5^2}

Okkk

Wait

[severe panther]

Anyone? Its due in about 15 mins

[ocean seal]

Πολλά άτομα είναι

[alpine sable]

b is the bottom edge of the base triangle

h is the height of the base triangle

H is the height of the prism

s_1 and s_2 are the 2 edges of the base triangle

bh is just the combined area of the 2 triangular faces

and finally (S_1+S_2+h)L is the area of the 3 rectangular side faces

L is the length of the prism

[harsh swallow]

@severe panther 8 * 12 + 8 * 6 + 12 * 10 + 12 * 6

[severe panther]

Thanks!

[last terrace]

can anyone help with this question

[shell widget]

if 1 < x < 2, then 1 < x^3 < 8, and also, 1 < x < 2 gives you 1 < x^2 < 4

then try to add these inequalities

also try to get a bound for x-6 using 1 < x < 2

then put it all together

see what happens

[noble sinew]

given they don't ask for any specific for the bound you could also just do like |(x^3+x^2-1)/(x-6)|<x^3+x^2-1<=...

but ye if you actually want a better bound do what Sup said

[last terrace]

i got an inequality after adding which is 1<x^3+x^2-1<11

and then -5<x-6<-4

[noble sinew]

ye so the number will be the largest if numerator is as far as possible away from 0 (so abs value of numerator will be as big as possible) and denominator as close to 0 as possible (so abs value of denominator as small as possible)

[last terrace]

ok i get that, but what do i do with this information?

[noble sinew]

so numerator was bounded above by 11

so plug 11 in instead of that

and same idea for denominator

[last terrace]

and for denominator plug -5 correct>

?

[noble sinew]

we wanted abs value of denominator to be as small as possible

[last terrace]

so see which one gives the smallest value

[noble sinew]

yes so is |-5| or |-4| the smallest number?

[last terrace]

4

[noble sinew]

si

[last terrace]

do u get a final answer of 725.5?

[noble sinew]

725.5 is indeed greater than the abs value thing we had

but not sure how you went from |11/-4| to 725.5

[last terrace]

wait i thought u divide the value after subing in 11 to numerator and -4 to abs of denominator

[noble sinew]

yes we do (if you want)

what is 11/4?

[last terrace]

2.75

[noble sinew]

yeah so M=11/4=2.75 works (can also just leave as a fraction)

[shell widget]

btw im getting 11/5

as the bound

[noble sinew]

But any value greater than 11/4 also works then

[last terrace]

ye tru

[noble sinew]

Which is why if you just want a quick bound you can for example just throw away denominator and quickly see 2^3+2^2-1=11 is a bound for example

11/5 doesn't work as a bound btw - consider x=1.9 for example.

[shell widget]

probably made a mistake then

i mean me

[noble sinew]

you want the abs min value of denominator (so -4)

[last terrace]

thanks guys

[noble sinew]

this is a very common technique btw to just do very rough inequalities to find a bound because it can make calculations a lot easier (imagine if our denomintor was something very ugly but we knew abs value of it was greater than 1 so then we could just throw it away)

[alpine sable]

whats the button on your keyboard to put something to the base? like log (base) the number

anybody

nvm

got it

can someone help me

-4/5 (9x-20) -3x= 4/5 -6

whats the value of x

plz

[solar tapir]

What have you tried?

[alpine sable]

well i tried inserting different numbers

and ik the number cant be higher than 3

[solar tapir]

Solve for the equation

[alpine sable]

bc 9 x 3 is 27 and 27-20 is 7 and the -4/5 will still be negative

and in the answer the -4/5 is positive

david

out

[sleek stag]

https://cdn.discordapp.com/attachments/832504573943218217/842793850526367764/unknown.png

can anyone help?

[alpine sable]

im in the 8th grade

idk that ;-;

[minor heath]

$-\frac{4}{5}(9x-20)-3x=\frac{4}{5}-6$ right?

[alpine sable]

yes

[ocean seal]

G3oG0dly

[minor heath]

ok what constant can u multiply to both sides so that the fractions turn into integers?

[alpine sable]

the x

right?

or the 9

[minor heath]

remember that the fractions in both the left side and the right side contain 4/5

what constant can u multiply to make this an integer?

[solar tapir]

First, simplify 4/5 - 6

[minor heath]

for example: $\frac{3}{4}*4=3$

[ocean seal]

G3oG0dly

[sly mantle]

@delicate cedar don't shitpost

[minor heath]

from this what can you multiply to 4/5 to make it an integer

[alpine sable]

yeah 9

im so lost rn :(

[shell widget]

LOL

[sly mantle]

👢

[shell widget]

hahaha

[glass lichen]

great idea, do that to the mod

[solar tapir]

What happened?

[sly mantle]

troll

[minor heath]

nonono you have to multiply 5 to both sides to make the fractions 4/5 equal to 4

[alpine sable]

whered u get the 5?

https://gyazo.com/76c13c15368f4f0966edd98bfd821bd7

how do i do this?

not rn vaypid

[minor heath]

multiplying 5 to both sides would make the equation $-4(9x-20)-3x=4-30$

[alpine sable]

go to another channel

[ocean seal]

G3oG0dly

[alpine sable]

ohhhh

[minor heath]

thats why i asked u which constant can be multiplied to both sides in order to remove the ones in fraction form

now that you have all integers, you can easily simplify ig

[alpine sable]

yea

[mystic kindle]

Y'all

I got a problem in calculus

[alpine sable]

not rn!!!

[minor heath]

this channel is occupied

[mystic kindle]

Aight

[minor heath]

you can go to other unoccupied channels

[mystic kindle]

Where to go?

[alpine sable]

questions 3

or 4

[mystic kindle]

Ok thanks y'all

[alpine sable]

so how do i start making the negative 4 in to positive?

-dead-

lemme try 1.5

thats 13.5

13.5 -20 is

6.5

negative 6.5

so thats basically

6/5

-6/5

AAAAAAHHHH im lost again

i confused my self

it needs to be -8/5

[minor heath]

remember the rules about the product of integers

[alpine sable]

eh i cant

the answer to 9x-20 needs to equal 8/5

-8/5

thats what ik so far

or no

positive

bc

[minor heath]

$-4(9x-20)-3x=-26$

[ocean seal]

G3oG0dly

[alpine sable]

-4 plus 8 will make postive 4

[minor heath]

try to factor the -4 into 9x-20

[alpine sable]

-4 x 9?

that is -36

[minor heath]

times x

[alpine sable]

oh yeah

-4 x 9x is

-36x

[minor heath]

now how about -4(-20)?

[alpine sable]

thatll give me

80

[minor heath]

there

[alpine sable]

positive 80

[minor heath]

now you just add them

[alpine sable]

80 + -36x is

[minor heath]

and it becomes $-36x+80-3x=-26$

[alpine sable]

44x\

[ocean seal]

G3oG0dly

[alpine sable]

wooooah

so its 44 - 3x

[minor heath]

combining like terms, it becomes $-39x+80=-26$

[ocean seal]

G3oG0dly

[alpine sable]

ohh

and that gives me

41

[minor heath]

okay just subtract 80 to both sides

what do equation do you get?

[alpine sable]

80 + 26 is 106

[minor heath]

yes

so the equation becomes $-39x=-106$ right?

[ocean seal]

G3oG0dly

[alpine sable]

yea

[minor heath]

then finally you cancel the negatives

and find x

now that you know that $39x=106$

[ocean seal]

G3oG0dly

[alpine sable]

uh huh

[alpine sable]

Hey @minor heath btw Did you forget to multiply -3x by 5

[minor heath]

ok now im bad

[alpine sable]

lol

[alpine sable]

thats gives me -15x

[minor heath]

yes

[alpine sable]

do i subtract -15x from 106?

[minor heath]

now $-36x+80-15x=-26$

[alpine sable]

ohh

[ocean seal]

G3oG0dly

[minor heath]

then just simplify from the example i had before

[alpine sable]

so thats gives me 44x-15x

so that sgives me

29

[minor heath]

nope its -51x

[alpine sable]

huh

[alpine sable]

Am I correct???

[minor heath]

subtract 80 to both sides then finally divide both sides by the number that multiplies x

[minor heath]

ye ig

[alpine sable]

so the answer is 106/51

[minor heath]

yes

[alpine sable]

but how?

wait so the value of x is 106/51

[minor heath]

from $-51x+80=-26$

[ocean seal]

G3oG0dly

[alpine sable]

that gives me 39x

[minor heath]

then $-51x=-106$ and finally cancel negatives

[ocean seal]

G3oG0dly

[alpine sable]

oh

ohhhhhhh

u add 80 to the -26

[minor heath]

subtract 80 to the -26*

[alpine sable]

giving u -106

ohh

and then u combine both 106 and 51

giving u

106/51

[minor heath]

now you just divide both sides by 51

yes

[alpine sable]

ohhhhhhhhh

thank youu

al my teacher said is guess -_-

[minor heath]

LOL

no worries

[alpine sable]

so the value of x is 106/51

[minor heath]

yes

[alpine sable]

but why such a big number

[minor heath]

no its just a bit more than 2

[alpine sable]

can we put it in decimal form as well

[alpine sable]

ohh ok

[minor heath]

just that the values of the numerator and the denominator are big

[alpine sable]

yeah

and 50 is half of 100

and here

the answer is 106/51

[minor heath]

nope only use mixed numbers

[alpine sable]

ok

[minor heath]

notice that 106 = 51*2+4

just divide 51*2/51 to get 2

and 4/51 to add to 2

[alpine sable]

it doesnt let me type the full answer

[minor heath]

to get 2 4/51

[minor heath]

wait a second

theres an x beside 4/5 in the right hand side

[alpine sable]

yea

i told u that

[minor heath]

so the answer is wrong

[alpine sable]

how?

[minor heath]

wait $5(-\frac{4}{5}(9x-20)-3x)=5(\frac{4}{5}x-6)$

[ocean seal]

G3oG0dly

[minor heath]

simplify and you get $-4(9x-20)-15x=4x-6$

[ocean seal]

G3oG0dly

[minor heath]

multiply -4 and you get $-36x+80-15x=4x-6$

[ocean seal]

G3oG0dly

[minor heath]

combine like terms and you get $-51x+80=4x-6$

[ocean seal]

G3oG0dly

[alpine sable]

not rn ahhd

[minor heath]

this channels occupied

[alpine sable]

anoother channel plz

[sly mantle]

@alpine sable is this a graded timed test?

[alpine sable]

oh all the channels are occupied

[alpine sable]

no its not times

timed*

allthough it is due by today

[minor heath]

add 51x to both sides and you get $80=55x-6$ then
add 6 to both sides to get $86=55x$

[alpine sable]

and im barely on question 4

[sly mantle]

graded test?

[ocean seal]

G3oG0dly

[minor heath]

then ig you have your answer

[alpine sable]

and theres 28 questions

[minor heath]

god that (4/5)x why didnt u tell me lol

[alpine sable]

so the answer is 86/55

[minor heath]

yes

[alpine sable]

ok thanks so very muuch

[sly mantle]

@alpine sable graded test?

[alpine sable]

no

[minor heath]

no worries

[alpine sable]

Guys a help plz

i have more questions

;-;

Kinda need some maths terminology help... What term do u call double, triple, quadruple etc? Increasing polynomially?
Then what term do u call when the number is 1/2, 1/3, 1/4
Decreasing polynomially too?
Or some other word like decreasing logarithmically

pls help

[sly mantle]

@alpine sable why does the site say 'test' all over?

[alpine sable]

idk

i think bc this is the elpac

or whatever its called

[minor heath]

is it a practice test or a summative test?

[alpine sable]

this decides whether u need more help in math or less help

for the next grade

[minor heath]

huh ok

but i gotta sleep now tho

[alpine sable]

lol ok

[sly mantle]

that's a diagnostic test

[minor heath]

k gtg goodbye ig

[sly mantle]

but even so, you shouldn't get help for it bc it's meant to measure how much you know or don't know

[flat yew]

Can someone help?

[sly mantle]

getting outside help messes up the result

[alpine sable]

ohhh

ok sorry

[alpine sable]

i wil do the rest on my own then

[peak sandal]

is this channel free now then?

( @flat yew do you want to use #help-0 or #help-1 you seem to have shared the questions in both)

welp somebody replied to you #help-1 so i'm taking this one :p

https://cdn.discordapp.com/attachments/774337236015382529/842776943061499964/prob4.png

https://cdn.discordapp.com/attachments/774337236015382529/842777099584143410/IMG_20210514_202449.jpg

could somebody confirm whether my iv is correct?

[alpine sable]

Are there any muslim mathematicians here

I want to know whether my career is halal

Not halal

Ok

[peak owl]

So after a while of doing inverse trig functions I forgot how to do them normally. Quick reminder anyone?

[peak owl]

1 sec, lowkey gotta Google what a Domain Is again

Haven't taken algebra in a while

@alpine sable what do you not understand?

[alpine sable]

Everything

[peak owl]

Fair enough 😅

[alpine sable]

Online school I didn’t pay attention

[peak owl]

So the domain Is the list of every possible number it can be.

[alpine sable]

So like -2

[solar cradle]

The domain is the set of x-values the function is defined for

[peak owl]

If the line is like that, it means any number from the start point to the end

Since the start point is 1

[sly mantle]

@alpine sable don't multipost

[peak owl]

You have to put it In inequality form

So the answer would be

[alpine sable]

He said he could help me in 0 channel sorry thought sup went to go do something @sly mantle

[sly mantle]

he's there in q2

[peak owl]

X is less than 1

[alpine sable]

Yeah he just responded a minute ago while Veno was help ing sorry

[peak owl]

If the circle was filled then it would be less than or equal to

X< 1

[alpine sable]

Oh ok thank you

What about the range

[peak owl]

Np, if you need any other help I can help

[alpine sable]

Range is the lowest and highest it goes right

But Idk how to write that as an inequality

[peak owl]

It's the domain, but instead of right and left it's up and down

So the y axis

So for the range, it's x < 0

[alpine sable]

I just tried that

[peak owl]

Did it say wrong?

[alpine sable]

Yes

[peak owl]

Try x < -2

[alpine sable]

Nope

[solar cradle]

The range is the set of y-values that the function can take, if you need to express it as an inequality it should be an inequality involving y not x

[peak owl]

Oh whoops, he's right

So y < 0

[alpine sable]

Yeah that worked ok thanks

[peak sandal]

<@&286206848099549185>

[alpine sable]

whats this

<@&286206848099549185>

[peak owl]

It's B if im not mistaken

[alpine sable]

k ty

lets hope ur not

[peak owl]

Wait before you submit that lemme work it out rq

[alpine sable]

k

[peak owl]

Yeah its b

[alpine sable]

Cant wait to flunk my finals

[peak owl]

My guesstimation was correct

[summer warren]

am i allowed to post or is someone still doing theirs

[alpine sable]

ty <3

[alpine sable]

They just got done I think

[summer warren]

anyone know?

[peak owl]

It's done biyo

[summer warren]

<@&286206848099549185>

[alpine sable]

just checking

this is a right\

[peak owl]

I got that ^

[summer warren]

how did u get it?

[peak owl]

Correct

[alpine sable]

kk ty

i submit

[peak owl]

First, find the area of the table cloth, Which is the 2 measures multiplied. Then you gotta account for all 24 of them so take the product and multiply it by 24

Atleast I think

[summer warren]

alright thanks

[peak owl]

Np :p

[peak owl]

Np :p

[alpine sable]

@peak owl

<3

That was a test 💀

[summer warren]

does anyone know how to do this one?

[peak owl]

@alpine sable congrats 😄

[scenic dew]

I’m feeling like a star and you can’t stop my shine, I’m solo. I’m riding solo. I’m riding solo. I’m riding solo solo

[peak owl]

I finished SA not too long ago so I'll try but don't expect too much. Might take me a bit because I gotta finish what I'm doing rq. Can you move on and come back to the question later?

[summer warren]

yeah that’s fine

[peak owl]

Alright

[alpine sable]

i cant figure out b

wait

wrong problem

cant figure out b

[shell widget]

find the slope of x - 4y = 7

the tangent should have a slope equal to the negative reciprocal of the slope of x-4y=7

[alpine sable]

ok

im getting y+3= 4(x-1/3)\

@shell widget

[shell widget]

okay

[alpine sable]

so the slope has to be 4 right

since the slope of the perp line is 1/4

thereforee the derivative

of f(x) = 6x+2a

and 6x+2 = 4

therefore x = 1/3

sub that back into f(x) and i get (1/3,-3)

[shell widget]

slope is -4

of the tangent

[alpine sable]

oh

so is it

y+3 = -4(x+1) ?

[smoky hearth]

are graph homomorphisms transitive

[mystic kindle]

There

OK so, you know how to get the area of a sector yeah?

[crystal cape]

yeah

[mystic kindle]

Alright, get the are of the big sector first

Then the area of the smaller one

DOC that is

[crystal cape]

ok

jsut a min

just*

[mystic kindle]

So, what do you think you need to do in order to get the difference

Oh alright

[crystal cape]

14.4

area of sector

the bigger one

wht next?

[mystic kindle]

Ok, so what do you think you need to get the area of the shaded region?

Aka

Which sector needs to be subtracted from the other?

[crystal cape]

im guessing

get the area of the triangle- area of small sector

[mystic kindle]

Impressive

You got the key to solving it now

Go ahead

[crystal cape]

how do i get the area of the triangle tho

[mystic kindle]

Well, you got the hypotenuse

Which is 6 cm

And you have an angle

0. 8 rads

[crystal cape]

wait

[mystic kindle]

How do you get the needed elements to get the area of the triangle

[crystal cape]

how is the hypotenuse 6cm?

[mystic kindle]

Isn't it the same as the radius?

[crystal cape]

cb is not part of the triangle

[mystic kindle]

Wait no

[crystal cape]

oh right

nevermind

[mystic kindle]

The triangle is AOC

[crystal cape]

yeah i got it

all radii same size

[mystic kindle]

Exactly

Now you get the area of triangle and the subtract the area of small sector

And done

[crystal cape]

sure

[mystic kindle]

I need to get something done sorry

Please ask somone else if you need any further help

Good luck

[crystal cape]

sure

thx

[mystic kindle]

You're welcome

[twilit plume]

how do i solve this

[alpine sable]

i think you mean "how do i simplify this"

just use PEMDAS

[sour lynx]

i need to find the probability and idk why but im getting so confused and i have to draw a list, tree diagram, or table

[unique flare]

Hiiii

I need some help please

[smoky hearth]

(1/6)(1/2)(1/2)

[hoary siren]

hey i have small problem
let's say there is a variable called x between 160 and -180
if x is 160 y should be 1 and if x is -180 y should be -1 and if x is -10 (which is the middle of 160 and -180) i want y to become 0 you get it?
how to get the value of x whatever i get in y

x = -10 + (170 * y) ?

[thorn kindle]

f(160) = 1, f(-180) = -1, f(-10) = 0

That equation is very wrong

[hoary siren]

i want to get y in every possible case

[thorn kindle]

Yes

[hoary siren]

not only in 1 , -1 and 0

[hoary siren]

so what's this

[hoary siren]

i changed the position of x and y and i think its right now

[lost drum]

can someone please help

4(x+5)^3 (x-1)^2 + (x+5)^4 2(x-1)

how do I factorize it further

I used wolfram alpha to see the first step

and it said "Factor (x+5)^3 out of 4(x+5)^3 (x-1)^2 + (x+5)^4 2(x-1)"

<@&286206848099549185>

[shell widget]

yeah factor out (x+5)^3

[lost drum]

how do i do that exactly

what are the rules involved

[shell widget]

so you get (x+5)^3 [4(x-1)^2 + (x+5) 2(x-1)]

[lost drum]

like for any excercize how do I do that

im doing an excercize paper to review for an exam

[shell widget]

look up how to factorize on youtube

[lost drum]

under what name

like whats the name of this kind of excercize

only thing this excercize paper tells me is the instructions

"Factorize completely"

[shell widget]

just factorization

[lost drum]

of polynomials?

[shell widget]

Yes

[plucky crow]

is the angle theta here not degrees from north?

or do ihave to define my compass around 0.4 being east

[alpine sable]

Is X hypotenuse?

[shell widget]

no

[alpine sable]

below 63?

[shell widget]

yes

[plucky crow]

@shell widget

if u ahve time pls can u help me

[lost drum]

hypotenuse is pythagorean theorem

or in this case it seems you gotta use the arcsin arctan arccos I believe

but i may be wrong

[oak chasm]

@alpine sable Hypotenuse is across the triangle from the right angle.

Not always on top, but always across from the right angle.

[plucky crow]

@oak chasm can u help me pls if u have the time

[alpine sable]

Oh ok

So do I use Toa

To solve for X

Or sin

[oak chasm]

@alpine sable Yes.

[alpine sable]

tan or sin*

[plucky crow]

tan

[alpine sable]

?

I use tan

Ok

[oak chasm]

You have opposite and adjacent, but not hypotenuse.

[plucky crow]

the hyp is always the longest side

[alpine sable]

Ohhhh

I see

Ok ok

[oak chasm]

@plucky crow Can you make your drawing larger please?

[alpine sable]

: )

Thank you guys

[plucky crow]

@oak chasm

[oak chasm]

OK, so it has a right triangle.

So, what are you supposed to find?

[plucky crow]

.

[oak chasm]

@plucky crow You need to draw a line directly to the east of length 0.4 and a line somewhere near northwest of length 1.5.

Then, you want the east-westward direction of the sum of those vectors to be zero.

[ocean seal]

Chai T. Rex

[oak chasm]

That will have two results, pick the one that's in the second quadrant.

Then convert the angle to degrees clockwise from directly north.

Does that make sense?

[plucky crow]

nope

wait

let me try and draw it

i think i get it

but not the bit about quadrant and converting

[alpine sable]

How would I solve for this?

[plucky crow]

for x

its the hypotenuse

and you have the adjacent

because its the one touching the angle

sohcahtoa

cah

cos is adjacent/hypotenus

[alpine sable]

Ok

[plucky crow]

so cos of thirty is 6 root 3/x

y is the opposite

you have teh adjacant

toa

tan

[oak chasm]

@plucky crow That should be over 1.5, not over 1 times 5.

[plucky crow]

oh thats what i meant

it still comes out to that

[oak chasm]

,w arccos(-(0.4/1.5)) in degrees

[ocean seal]

Results provided by WolframAlpha

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

Requested by Chai T. Rex#7323

[plucky crow]

i was using text to ink

ink to text*

[ocean seal]

Chai T. Rex

[plucky crow]

yeah

how would i convert that to a bearing

360- that or something?

wait no

idk

[oak chasm]

,w angle 105.5 degrees

[ocean seal]

Results provided by WolframAlpha

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

Requested by Chai T. Rex#7323

[oak chasm]

@plucky crow See the drawing in blue?

[plucky crow]

yh

[oak chasm]

OK, now we want to go from straight up (north) clockwise to that angle.

[alpine sable]

Ok so it's Toa

O over 6/3

[plucky crow]

channel in use