help-0

[ashen wave]

yeah exactly

[harsh swallow]

perhaps a name for it could be

data/distributions

[ashen wave]

does this mean that there is no name for the whole unit? its just a bunch of wierd stuff

[alpine sable]

Could anyone pls help me with this

[harsh swallow]

it's all related to descriptive statistics

[ashen wave]

that sounds about right thank you 🙂

[harsh swallow]

ways to describe and organize data

[lucid bough]

Yes, a sec

[harsh swallow]

see what's going on with the data

see how it is distributed

box plots are a way to do that

[alpine sable]

Ok thnx

[ashen wave]

this helps so much xD thank you

[harsh swallow]

outliers are those cases that are not 'part' of the distribution, they are considered 'wrong'

deviation is about the range of the distribution

etc etc

[ashen wave]

oh?

okk I didnt know

[harsh swallow]

you can have 1 * standard deviation, 2 *, 3 * and depending on how far away from normal it is the more of an outlier it is

the 1,5 * IQR rule is that

unless i've misunderstood

@alpine sable

[harsh swallow]

don't just give the answer

we want everyone to understand and enjoy maths

not just know the answer 😄

[hardy valve]

May I have next in line after them? ^^

[harsh swallow]

go ahead

[neon sonnet]

Just saying can i get help in 40min

[clear escarp]

For exam?

[neon sonnet]

No its for a study guide

[hardy valve]

Well, I’m studying for my final right now and have a number of questions, but I don’t know whether I should send a pic or type them out one at a time

[modest fiber]

who l'hospitals $\lim_{x \to 0} \frac{\sin(x)}{x}$ is a real madlad

[ocean seal]

ProphetX

[lucid bough]

Yes, sorry; I think the demonstration are kind of easy; you just have to pay attention

[clear escarp]

[modest fiber]

NEVERENDING LOOP

[hardy valve]

As one involves using “the sum of” and idk how to type that into here ):

I don’t know if sending a picture of all the questions I have counts as spam though :/ it’s one picture

[harsh swallow]

$\sum$

$\sum_a^b$

$\sum_a^b k$

[ocean seal]

Katharine

[hardy valve]

Ah, alright, thanks! Would you rather I do that instead of send a pic?

[harsh swallow]

do what you think is best

if it turns out to be spam the mods will see it and deal with it

but if you

're

just trying to get help i don't think they'll mind

[hardy valve]

Alright, thanks!

I’d like to start at number one and work down, if that’s alright. And if I take up too much time, I’m happy to stop whenever ^^

I just need some aid with these if anyone is able

[harsh swallow]

at the first digit

how many choices do you have

[hardy valve]

10

[harsh swallow]

and second?

[hardy valve]

10 again? The consecutive part is what messed me up a bit

[harsh swallow]

so i don't entirely know the correct reading

but

the second digit is clear

it's 9

[wraith cloud]

does anyone know the answer?

[hardy valve]

Gotcha. So would it be 1098*7?

[harsh swallow]

that's one option

[wraith cloud]

oh thank you

[harsh swallow]

but reading it differently

jame that's not the answer XD

[wraith cloud]

oh

good thing i did not answer it

[lucid bough]

This is jus a report

Look:

[wraith cloud]

ok

[harsh swallow]

the other way of reading it

is that when you have the first digit

lets say a 8

then the next one can be anything but 8

and then that digit is lets say

4

then the next one can be anything but 4

so it's either 10 * 9 * 8 * 7 or 10 * 9^3

[lucid bough]

I put the rule in the box

[harsh swallow]

i'm terrible with word questions 😄

[hardy valve]

Gotcha, and that’s the same as (10)_4 right?

[wraith cloud]

ok ty

[hardy valve]

I’m sorry lol, that’s basically all my discrete math class is

[harsh swallow]

10_4?

[hardy valve]

$(10)_4$

[ocean seal]

welp.

[wraith cloud]

[harsh swallow]

$C(10,4)$?

no

i'm confused

the first way of reading it is 10!/6!

[hardy valve]

Basically 10 factorial but only until the 4th integer

I’m sorry if I made it all confusing

[harsh swallow]

its all good

anyway

[hardy valve]

Yeah, exactly what you just said though

[harsh swallow]

idk which of the answers it is

but it's either 10!/6!

or 10 * 9^3

😄

[hardy valve]

Gotcha. Thanks!

“No consecutive digits are the same” is what got me

[frail grove]

You’re trying to divide a group into four teams. All of you count off, and you get number 27. Find out your team.

<@&286206848099549185>

[manic quail]

What does "count off" mean?

[frail grove]

idk it's so confusing 😕

[manic quail]

I have an idea what it could mean.

But it is still weird.

[frail grove]

do u know what modulo is?

[manic quail]

Yes, sure.

Modulo is a function that gives you "the rest" when dividing two numbers.

[frail grove]

the answer is 27 modulo 4 but i still don't get it

[manic quail]

Ahhh, they mean that.

27 mod 4 gives you 3.

[frail grove]

that't not enough though, cause we don't know how many people are in the group

[manic quail]

You cannot know that since you have no idea how many people there were in the first place.

[frail grove]

yeah so it's missing something right?

[manic quail]

Yes.

[frail grove]

Ok thank you for your time 🙂

[harsh swallow]

if you gotta find your team then 27 mod 4 is all you need is it not?

[manic quail]

Yes, although they should clarify what they mean by "count off", or I am just stupid.

[harsh swallow]

no you're right

that wording is dumb

[rose shuttle]

Find the spf when s is 8 and p is -180

Find the f

[manic quail]

What does spf mean?

[hardy valve]

@manic quail with my problem above, was it 10!/6! Or 10* 9^3 ?

[manic quail]

Could you please repost the problem, @hardy valve ?

[hardy valve]

A website uses 4-digit identification, and no consecutive digits are the same. How many identification numbers are available?

[manic quail]

If my english is good enough, it should $10\cdot 9 \cdot 9 \cdot 9 =10 \cdot 9^3$.

[harsh swallow]

wrong slash

\

[ocean seal]

verysadperson

[hardy valve]

Oh, alright! Thanks! 🙂

[manic quail]

fake news -.- always was correct

[undone copper]

anyone know what are "adherent points" of topology?

[neon sonnet]

Can i please have help with my study guide its about geometry and angles

I have a big test tomorrow and i need to make sure i get everything correct

[lucid bough]

Yes

I will try

[neon sonnet]

Thanks also i like your profile pic

[lucid bough]

:)) thank you

[neon sonnet]

Its about 5 questions long

I just dont understand this

Im kinda embarrassed to be honest because i learned this a couple years ago and I forgot

[lucid bough]

I also don’t understand the question

[neon sonnet]

Really? Dang

[lucid bough]

I remember the theory, but I don’t understand what the sentence wants

So it’s asking for T/F for what?

[neon sonnet]

Ah

I think I understand

[lucid bough]

Yes, an angle is obtuse if it s 90<x<180

[neon sonnet]

Its asking if the conditional statement is true or false

[lucid bough]

yhea, I also think this

[neon sonnet]

I dont get my teachers stuff sometimes

[lucid bough]

So you have to write the conditional first

[neon sonnet]

Ya then see if its true or false

[harsh swallow]

conditional means if then

so if

then obtuse

[lucid bough]

I think it s like this: if the angle is 90<x<180 then the angle is obtuse

And it s true

[neon sonnet]

Ya i think that could be right

[lucid bough]

https://youtu.be/F3544ZyO-eU

[harsh swallow]

actually wouldn't it be other way around

if angle obtuse

then

[lucid bough]

So what I wrote is converse?

[neon sonnet]

That makes sense

[lucid bough]

I m not sure for the English words

[neon sonnet]

So it should be if the angle is obtuse then the measure is greater than 90 and less than 180

[harsh swallow]

the statement means that the conditional would be if the angle is obtuse then 90 < theta < 180

which is true

[lucid bough]

Yes

[harsh swallow]

that's the definition

[lucid bough]

Yes

For a

Than, for b I think it s my first statement

[neon sonnet]

Ok cool

Ya

[lucid bough]

Then, for c:

[neon sonnet]

Ya thats going to be tricky for me

[lucid bough]

It s with negative

If not .... then not ...

[harsh swallow]

if not obtuse

then not measure is greater than 90 and less than 180

[lucid bough]

Yes

[alpine sable]

$\int \frac {1}{x^{2}(1-\frac {1}{x})}$

[harsh swallow]

is that true?

[ocean seal]

nosequepasa

[alpine sable]

how can i do this?

[lucid bough]

And this is false I think

[neon sonnet]

Ya it should be false

[lucid bough]

No wait

It s true

Because

If the angle is not obtuse, it s sharp? (Not sure for the English word)

And this means it s 0-90

[rough spear]

@alpine sable this channel is occupied

[harsh swallow]

if we know an angle is specifically not obtuse

what do we know about the angle?

[neon sonnet]

Thats its not 90 or less than 180

[lucid bough]

That it s 0–90

[harsh swallow]

that it does not lay in the interval (90, 180)

[lucid bough]

Yes

[harsh swallow]

which means that it's true

[lucid bough]

So the inverse it s true

[neon sonnet]

Ya

[harsh swallow]

because that's the inverse

[lucid bough]

Yes

[neon sonnet]

Ok time for d

[harsh swallow]

if not measure is greater than 90 and less than 180

[neon sonnet]

The contrapositive

[harsh swallow]

then not angle is obtuse

[neon sonnet]

Is that it?

[harsh swallow]

yeah sorry

[lucid bough]

Yhea

[neon sonnet]

You sure?

[lucid bough]

If not q, then not p

If the angle is not 90-180

Then it s not Optus

Obtuse*

[harsh swallow]

if we know that the condition exists

[neon sonnet]

Just to make sure im talking about d

[harsh swallow]

if P then Q

[lucid bough]

Yes

[harsh swallow]

then the contrapositive

[neon sonnet]

Ok cool

[harsh swallow]

is we flip it around

if Q then P

and we negate both

if not Q then not P

[lucid bough]

And this is also true

[harsh swallow]

because if we know the original condition

[lucid bough]

@neon sonnet - look at this before your math test: https://youtu.be/TCBu8PD4Lls

[harsh swallow]

we know that if Q is not true then necessarily P is not true

example

if i have the condition

the statement

the if P then Q

[neon sonnet]

So d should be if the measure is not greater than 90 and less than 180 then the angle is not obtuse.

Right?

[harsh swallow]

if not measure is greater than 90 and less than 180

[lucid bough]

But the statement is true:
An easier example: if it s not human, it s not a woman.
(If you assume all women are humans)

[lucid bough]

Yes

[neon sonnet]

Thank you

[lucid bough]

That s it

[neon sonnet]

Yay

Ok guys

Time for number two

Are you ready to get your brain melted?

Because i dont get what he means

[lucid bough]

Wow okay, I hate when the methodology is trash

[harsh swallow]

you have a bar that is 39 long

called AC

[neon sonnet]

Ok

[harsh swallow]

you divide it up

into AB and BC

AB = x + 3 long

and BC = 2x long

with me?

[lucid bough]

And

[neon sonnet]

Ok im kinda with you

[lucid bough]

(X+3)+2x=39

3x=36 => x=12

[harsh swallow]

you need to explain why you take those steps

why step 1 (AC = 39 )

is the way that it is

for step 1

it's simple

[lucid bough]

Ac= ab+bc

[harsh swallow]

step 1 is given

[neon sonnet]

Ok

[harsh swallow]

step 2

also given

[lucid bough]

Then, we observe the length in x given

[lucid bough]

And then, we observe this:

[neon sonnet]

Step 1 is Ac=39
Step 2 is AB + BC=AC

[lucid bough]

Yes

[neon sonnet]

Ok

[lucid bough]

Step 3 this:

[harsh swallow]

Step 1, 2, and 3 are setup steps

[lucid bough]

.

[harsh swallow]

they're given

they're basically saying if this situation is the case

which it is

then step 4 5 6 ...

[lucid bough]

Step 4 is replacing ab and bc

With the length

That have x

[neon sonnet]

Ok wowo

[harsh swallow]

holdup

step 1 is seeing that the bar AC is length 39

given

[neon sonnet]

So step 3 is Ac=ab+bc?

[harsh swallow]

step 2 is seeing that it's been divided in 2 with AB and BC and AB + BC = AC

which is also given

step 3 is seeing that AB = x + 3, BC = 2x and AC = x+3 + 2x which is filling in the given values

[lucid bough]

Step 3 is observing that ab= x+ 3

Yes

Exactly

And 4

[harsh swallow]

holdup

[lucid bough]

Is basically replacing

[neon sonnet]

Ok guys so under statement for 3 i just put(x+3)+2x=39

[harsh swallow]

i think bacon can do step 4

[lucid bough]

Right

[neon sonnet]

Ok ah

Let me try this out

Tell me if im wrong

Step 3 in statement is (x+3)+2x=39

[harsh swallow]

yes

[lucid bough]

Yes

[neon sonnet]

And reason is ab=x+3

[lucid bough]

And the explanation

Yes

[harsh swallow]

and bc = 2x

and ac = 39

step 1

ac = 39

[lucid bough]

Bacon get it :)))

[harsh swallow]

ab and bc are given

[neon sonnet]

Ya ok

So i got all the statement stuff

[lucid bough]

And 5: you just use algebra

[neon sonnet]

Cool

[lucid bough]

To finish

[harsh swallow]

the goal is to fill in the reasons why it is the case

for step 1 the reason is that it's given

for step 2 the same

for step 3 the reason is to fill in given values

[neon sonnet]

So for the reason step 1 is the same as statement

[harsh swallow]

no the reason that AC = 39 is that it is given to you

handed from the lord emperor himself

[lucid bough]

I will be completely honest: at school in the 9 grade when I did this we wasn’t supposed to explain why really detailed; it was enough if we just solved step by step

[neon sonnet]

So i just say given

[harsh swallow]

that'll be good

[neon sonnet]

I completely forgot all of this

[harsh swallow]

you know the reasons for the first steps

gib reason for step 4

😄

[neon sonnet]

So step 2 is divide ab and bc and ab +bc=ac

[lucid bough]

Yes, you can say that it s observable from the picture

[neon sonnet]

Ok so i just put observable? Or just say divide for step 2 btw

[harsh swallow]

visible in picture/given

[neon sonnet]

Ok so i just put given

[harsh swallow]

the picture shows that that is the case

[neon sonnet]

Ok for step 3

[harsh swallow]

you should put given by picture

to show that it's evident because of the picture

[neon sonnet]

step 3 is seeing that AB = x + 3, BC = 2x and AC = x+3 + 2x which is filling in the given values?

Right?

[harsh swallow]

well the last is what results i think i said it wrong

step 3 is seeing that AB = x + 3, BC = 2x and AC = 39 which you fill into the equation AB + BC = AC

[neon sonnet]

Ok got it

[lucid bough]

Yes, you can also say given by picture

[neon sonnet]

Thanks

Ok so step 4 is just algebra

[pale terrace]

hi I'm doing an assignment where I'm graphing a sin function and my max value is 20.5. How do I write that with pi

[neon sonnet]

I can do that

[pale terrace]

so pi/sum number

[lucid bough]

Hmm, just divide 20,5 with pi

[neon sonnet]

Wow this is easy

[lucid bough]

And then you have pi*k (k being the result of the division)

[pale terrace]

I got 6.5 so would I write that as pi*6.5?

it's not an exact solution

[lucid bough]

Yes, I think that s it

[neon sonnet]

So for step 6 i just put given shouldn’t i?

[pale terrace]

or should I just leave it as 20.5/pi

[lucid bough]

Step 6?

[neon sonnet]

Ya

X=12

[lucid bough]

6,5* pi sounds fine for me

[pale terrace]

well it's 6.525...

[lucid bough]

No, you have to prove this

[pale terrace]

I rounded

[neon sonnet]

Ya i just divide

[lucid bough]

Then 20.5/pi is fine

[pale terrace]

thank you for your help

[lucid bough]

Yes, step 6 I think it s just “x=12 true”

What did you put at step 5?

[neon sonnet]

I just put divide x3 and 36 by 3

therefore x =12

[lucid bough]

Oh right

Yes

[neon sonnet]

So i just put given

[lucid bough]

But it s not given

You had to check that

[neon sonnet]

So what should i put for 6

[lucid bough]

You can say x=12 correspond with the question

As the only solution

[neon sonnet]

So i say x=12 corresponds with the question and is the only solution?

[lucid bough]

Yes, i think that s it

I never had to do this

[neon sonnet]

Ok finally done with that

[lucid bough]

So I hope I am helping you with the right indications

[neon sonnet]

Ya

Its making a lot of sense now

Im going to practice some more problems with this

Ok for question 3

And dont worry theres only 4 questions

What now

[lucid bough]

I hate the way they make the pictures

I don t understand if they are perpendicular

[neon sonnet]

Same

[lucid bough]

I think they are

[neon sonnet]

So i think he means

[lucid bough]

1=4= 90*

[neon sonnet]

/:

[lucid bough]

Yes

[neon sonnet]

My hand writing sucks

[lucid bough]

No, it s definitely much better than their picture

:))

[neon sonnet]

Thanks

[lucid bough]

This is given

Bcz 1+ 4 =180

But 1=4

So 2*(1)=2*(4)=180

[frosty zodiac]

because 3 comes after 2, solved.

[lucid bough]

So 1=4=90*

[neon sonnet]

Ok

So

1 for reason is given

[lucid bough]

And then we know that 1=3 and 2=4 (because it s a right cut by a secant)

And then as you did for 1=4 you have to do for 3=2
And in the end we have 1=2=3=4

[dense kindle]

qual é a tabuada do 11?

[lucid bough]

Yes, but you have to explain why

[neon sonnet]

Ah ok

So i explain that we know 1=3 and 2=4

[lucid bough]

Yes

Because it s a right cut by a secant

[neon sonnet]

So what about 2

Do i just say 4=2

Right?

You still there?

[lucid bough]

Yes sorry

[neon sonnet]

Ah cool

[lucid bough]

You say this because again it s a right and a secant

[neon sonnet]

Wait thats it?

I basically just repeat my self over and over?

Btw when i need help can i ping you?

[neon sonnet]

Sorry if you dont want to be pinged but im still kinda confused do i just do this over and over again?

[lucid bough]

Not over and over; just In this case

[neon sonnet]

Ah ok

[lucid bough]

You have to explain for the 2 parts

[neon sonnet]

So 3 should be different right?

[lucid bough]

Yes, anyone; just ping me if you need my help

[neon sonnet]

Ok thanks

[lucid bough]

Different? Why?

[neon sonnet]

So for reasons 2 i said 4=2 because its right cut by a secant

Is that ok?

[lucid bough]

Yes

[neon sonnet]

Thanks

So what about reason 3

[lucid bough]

Part 3 is that 1=4

So 1=2=3=4

[neon sonnet]

So i just put 1=2=3=4

For reason 3

Just wondering

Im so close to finishing

[neon sonnet]

I just put that for reason 3?

[lucid bough]

Yes

[neon sonnet]

Ok how about 4

[lucid bough]

But explain why

[neon sonnet]

Ah ok

[lucid bough]

I don t think there is a step 4

That s it

[neon sonnet]

How would i explain that?

1=2=3=4 because 1=4

[neon sonnet]

How do i explain that do i just say because 1=4

[lucid bough]

Like this:

You don t have to use words

[neon sonnet]

Ah ok

So

How about 4?

[neon sonnet]

How about 4? Do i just say 1=3

[lucid bough]

Yes

I think it s done

[neon sonnet]

Ok so i say 1=3 because its right cut by a secant

Still there?

[lucid bough]

Yes

[neon sonnet]

Yay

[lucid bough]

Yes

[neon sonnet]

ok before you go again

For part 5 do i just 2=3 because same thing

Or do i have to say something else

@lucid bough last one

[lucid bough]

Yes

[lucid bough]

Ok

[neon sonnet]

wait so for reasons part 5 i say 2=3 because its a right cut by a secant

[lucid bough]

Wait

[neon sonnet]

whats up

[lucid bough]

Send me a pic

With what you wrote

[neon sonnet]

Oh ok

Is that ok?

[lucid bough]

No, you explained step 2 and 4

Already

At step 1

You have to prove that 2=3

[neon sonnet]

Ah ok

[lucid bough]

You did that

At step 3

It s done

Step 4 and 5 are not useful

[neon sonnet]

ah ok

So how should i do it

im just confused at this point

So what should i do for part 4 and 5

@lucid bough

[lucid bough]

Why

Do you need 5 steps?

Did the problem required 5 steps?

[neon sonnet]

Ya theres 5 statements

[lucid bough]

Then, jus don’t mention

[neon sonnet]

Wait unless your saying i dont need 5 reasons

[lucid bough]

The part with

1=3 and .... in the first step

[neon sonnet]

Ya

[lucid bough]

For 1 the reason is: given in statement

[neon sonnet]

2=4

Ok

[lucid bough]

For 2 the reason it because it s a right cut by a secant

For 3 the reason is that both 1 and 2 are equal with 4

For 4 the reason is that are congruent angles because it s a right cut by a secant

And for 5 the reason is that both 3 and 2 are equal with 1

[neon sonnet]

ok thanks

I have one last question after i write this down

[lucid bough]

Okay sure

[neon sonnet]

Last question Angle 1 and Angle 2 are linear pair. If the measure of Angle 1 =  30 degrees,                      what is the measure of angle 2?

Finally last question

[alpine sable]

need the current in A

im getting 1A but can someone confirm

[neon sonnet]

This channel is taken

[alpine sable]

idc

[neon sonnet]

Thats on you

[lucid bough]

180-30

[neon sonnet]

Ok thanks

Do i just solve that

[neon sonnet]

150 right?

[lucid bough]

Yes

[neon sonnet]

Ok thanks for everything

I have more questions but i think i can answer them on my own

[rich bough]

Hey is anyone using this channel right now?

@neon sonnet ?

Sorry for the ping btw

[south finch]

don't think so

go ahead

[rich bough]

ah okay thanks

[neon sonnet]

Its cool

Ok im confused again

[rich bough]

u ask ur question in this channel

ill find another one

[neon sonnet]

I need your help one last time

[lucid bough]

:)) sure

[neon sonnet]

I think im going crazy

The sum of the measures of complementary angles

Its 90 right

Or am i crazy

Or is it 180

[rich bough]

its 90

supplementary is 180

@neon sonnet ^

[neon sonnet]

Ok thanks

Im right then

Wait are you sure?

[lucid bough]

Yes

[neon sonnet]

Ok thanks

Finally finished thanks

[lost steeple]

https://gyazo.com/7340c28041f94e13a6da92ee76f8b577

Could someone guide me on the left side

how can I make it 2cos(x)

[slender marten]

(1 - cos(2x))/2 = sin^2(x).

[lost steeple]

where did /2 come from?

[slender marten]

It's an identity.

[white ledge]

i need the rate of change of the area of a trapazoid
hight 1 is 10
hight 2 is 6

base gaines at a 2m/s
i want to find growth when base =10

i got equation is 8x=A

da/dt= 8 dx/dt

dx/dt=2

so 16 no matter the leight

but i think my equationis wrong

this is the acual question but i simplified it

sorry for ping but <@&286206848099549185>

[alpine sable]

Then the question is worded wrong somehow

.965 is the answer no doubt from the info given

[small stag]

It’s the area of a triangle not a trapezoid

[final crag]

Does this follow binomial distrubtion?

<@&286206848099549185>

[mystic yacht]

guys what are "sin" "cos" and "tan". I don't really get it. how is it used in math?

[worthy verge]

@mystic yacht

[mystic yacht]

yes

[worthy verge]

New to trig?

[mystic yacht]

Yes

idk what trig is

[worthy verge]

Ok

[final crag]

this channel was in use :l

[mystic yacht]

oh sorry

wanna move to dms? @worthy verge

[worthy verge]

Ill finish it in 1 picture

[mystic yacht]

ok

[stiff vortex]

can someone explain how these are equal

my teacher told me they are

and im confused

[gloomy zealot]

note that sqrt(2) / sqrt(2) == 1

try multiplying the left side by $sqrt(2) / sqrt(2)$ (which again, is just 1)

[gusty mural]

middle line of that trigonometric function is y=17.5, so y=AsinB(x+-C)+D, D is 17.5.

The amplitude is 30-17.5=12.5 so A value is 12.5

B value is 2pi/B=period, period of this function is 12, so B is 2pi/12=pi/6, B = pi/6

C value is the horizontal shift of the graph, it has shifted to the right by 4 values so the C value is -4

[woeful pulsar]

Dont just give answers

[rich bough]

is anyone using this channel

[gusty mural]

i explained how i got the answer for him

[glass lichen]

you gave the answer.

[woeful pulsar]

Tho they can just copy

Thats not what we want to promote

[gusty mural]

ok sorry bro

[glass lichen]

Explain with them, not just "here's the answer"

[woeful pulsar]

Focus on where they are stuck

[gusty mural]

sorry im new to this server

sorry lol

[nocturne carbon]

Wait can I ask someone if my answer is correct for a work sheet

[glass lichen]

You can ask. . .

[nocturne carbon]

Okay

Is this channel done being used?

[glass lichen]

yes.

[nocturne carbon]

Okay

I just need to know if im doing it right

Aishman's glasses flew onto a platform 12 feet above the ground. She placed a ladder 5 feet away from the ground to reach the platform. How long is the ladder?

This is the question

[dire wren]

pythag theorem

[nocturne carbon]

yes I hate it

[dire wren]

well first you should draw a diagram to help you visualise

[glass lichen]

what's your answer?

[nocturne carbon]

I did

[glass lichen]

they said they did it, no need to explain if they did it correctly

[nocturne carbon]

I got 13

[dire wren]

yeah ik

[glass lichen]

yes

[dire wren]

tahts correct

[glass lichen]

since it's a 5 12 13

[nocturne carbon]

I used a calculator but how do I find the square root fast

[glass lichen]

just know square roots if you want a fast method

[dire wren]

you can just multiply them? These are smaller numbers so you can just memorize them even

[nocturne carbon]

I know but for the “ladder size” the number I needed to find the square root was 169

[woeful pulsar]

Memorise small squares

[dire wren]

yeah

[nocturne carbon]

Okay thanks

So the answer is 13 right

[dire wren]

like all numbers below 225 should be easy to memorize

yeah its 13

[nocturne carbon]

Okay thanks

[tawdry urchin]

Guys

These word problems keeps getting worse

[woeful pulsar]

Just make an equation and solve it

Sketch a diagram if you think you need one

[tawdry urchin]

i cant seem to make an equation of this

[glass lichen]

you can form a right triangle from the tower top, base and the house

[tawdry urchin]

and then pyth.?

one side 100m one side x one side x+2?

[woeful pulsar]

^^

[tawdry urchin]

(x+2)^2 - 100^2 = x^2?

x = 2499?

I feel like i messed up

[slate skiff]

you're correct

[tawdry urchin]

Thanks <3

[acoustic bay]

Can someone help me out? I am studying statistics and I have run into a problem that I can't find a single answer for online. I am posting the problem followed by the two solutions I found. Can someone tell me which one is correct so that I can study it?

This is the problem

Possible solution 1

https://www.slader.com/textbook/9780321923271-probability-and-statistical-inference-9th-edition/265/exercises/10/

Possible solution 2

this is from chegg

can someone tell me which is the correct answer for my problem out of these two?

[glass lichen]

Chegg 🤢

[acoustic bay]

I have found conflicting responses across chegg thats why I am hesitant

@glass lichen are you saying the chegg is the correct one?

[glass lichen]

No im saying do the question yourself, then check an answer

[acoustic bay]

i did the question but I still dont know the answer

[glass lichen]

well did you get the same answer as one of them?

[woeful pulsar]

Can you substitute back in to check?

[acoustic bay]

yea but im usually wrong

@woeful pulsar i am still really iffy on the subject so i am not sure how I would do it

[remote temple]

Yo kev my man u good at stat

[acoustic bay]

@remote temple Im decent, I scored well on the midterm but am lost on all of this new stuff I posted above

[remote temple]

I am down bad

can u give this one a shot

The height of an adult male is known to be normally distributed with mean of 175 cm and standard deviation 6 cm. The 20th percentile of the distribution of heights is:

[acoustic bay]

Hold on I think I might know let me check the z score formula

[remote temple]

answer choices are

175

179

172

170

[acoustic bay]

I got 169.948

thats assuming the 20th percentile has a z score of - 0.842

[remote temple]

Kevin, you seem like a wise man. I will no doubt put my faith in your hands. The fate of my senior year math class rests in your hands. I will put answer choice D

[bold token]

yo how did you convert percentile to z score?

[acoustic bay]

Damn thats a lot of pressure, you might want to check my numbers bro

@bold token It comes from the Z table, when you look at the table search for the closest value to 0.2 which is 0.2005 which lines up to -0.84.

Then I just googled what z score is 20th percentile

[bold token]

ohh 0.2 = 20%?

[acoustic bay]

yes

[remote temple]

Kevin, while you are still in a stat mood. Would you care to give another question a shot

[acoustic bay]

@remote temple Im not in the stat mood bro, that one just wasnt bad. Gotta learn that other problem I posted above lmao

[remote temple]

Forgive me Kevin. Greed has blinded my judgement

[acoustic bay]

your good bro

[drowsy scroll]

What is another method?

Is there another way to solve this

[glass lichen]

guessing

[drowsy scroll]

bru

[glass lichen]

Well that's the other way to solve an equation if you dont want algebra

[drowsy scroll]

Yeah, i was thinking of different methods to tackle such problem

[slate skiff]

add a to both sides, subtract 14 from both sides

[polar whale]

That's the easiest method I think

Why would u wanna make that Complicated?

[drowsy scroll]

Just wanted to know

[red hill]

<@&286206848099549185> Can I get help for these two problems please? Both my answers are wrong

[rigid smelt]

Can you show you work

[red hill]

Here is the work for the first, the second I don’t know what to do honestly

[rigid smelt]

hmm for the polygon shaped one, you should just integrate it, but dividing into shapes is fine too

@alpine sable please move

this channel is in use

[rigid smelt]

you got the method right

but your number isnt

the final result is wrong

[red hill]

Yea I see that

[rigid smelt]

it should be -6.5 if i didnt make any other mistakes

[red hill]

What did you mean integrate? How would I do that

[rigid smelt]

so look at this

wait lemme draw it out

so this is a polygon, which is quite complicated to calculated the area

but we could integrate it

to find the area

more specifically, you could integrate the slope line in the bottom

from -4 to -1

which will give you the area of the polygon

so all you need to do is to just find the linear function, and integrate it from -4 to -1

are you clear on this?

[red hill]

I’m still not sure what you mean by integrate it from -4 to -1

[rigid smelt]

this is what i meant

if thats what you are unclear about

[nocturne carbon]

Can someone help me real quick it’s just a quick question

[rigid smelt]

all you need is to just find the line

and since you have two points

thats just kid's play

[rigid smelt]

channel is occupied

please move

[nocturne carbon]

Okay

[red hill]

Ok yea I get it, I just needed to see the symbol. Do you have any idea about the second question?

[rigid smelt]

so in the second question

there are two ways you can do this

firstly by words, or secondly by numbers

lemme draw the shape out for you

so here is your triangle

as represented by the integral

is that right?

[red hill]

Yea

[rigid smelt]

oh wait

nvm, my mistake

that was f'(x)

jeez

so basically, its saying to integrate the derivative of f(x)

so what do you get when you integrate the derivative of f(x)?

(fundamental theorem of calc)

[red hill]

I get 0, from -1 to 1

Are you saying I have to integrate it twice?

[rigid smelt]

no, lets do it slowly

we are integrating the derivative

[rigid smelt]

no

so basically, the picture i drew has nothing to do with, and is, in a way, wrong because we are integrating the derivative

so lets not look at it

do you remember what you (probably) learned at first counter with integrals and antiderivative?

[red hill]

I just remember learning the fundamental theorem of calculus

[rigid smelt]

yes

we need to use a piece of knowledge in there

so there is a section that tells you what happen when you integrate a derivative

[foggy onyx]

aye guys uh, quick question

what is logarithms?

[rigid smelt]

logarithms is the inverse of exponent, and this channel is used, next time please use a free one

[foggy onyx]

oops

sorry to disturb

thanks btw

[red hill]

What section is it

[rigid smelt]

its in the first part i think

lemme check

yeah

so we are really interested in the second equation

it is telling us that if F(x) is an integral of f(x) then f(x) is the derivative of F(x)

[red hill]

I know that the anti derivative of f(x) is F(x)- F(a)

[rigid smelt]

yeah, but we are not really interested in that

we need something that has to do with derivative

[rigid smelt]

so basically this

maybe i should reword it

so basically, if you integrate a derivative, you will get back the original function

hence, the name antiderivative

[red hill]

So how do I use that to get the answer?

[rigid smelt]

so here the question gave you an integral of the derivative

so you integrate the derivative

f'(x)

what would you get after integrating?

[red hill]

But how do you integrate the derivative if I don’t even have the derivative

[rigid smelt]

you dont need it

remember what i said

[rigid smelt]

.

[red hill]

So the answer is just the original function??

[rigid smelt]

yes

the original function evaluating from -1 to 1

and the answer is not 0 btw

[red hill]

How is it not zero? They are canceling out

[rigid smelt]

no

so f(x) evaluating from -1 to 1

so we will have f(1) - f(-1)

which is not 0

at all

remember, we are integrating the derivative, not the function f(x)

[crisp breach]

Is the first step of this reduced row echelon form

[remote temple]

@acoustic bay Kevin, that answer you gave me was right. I only got one question wrong on my test. You did well here today I am eternally grateful.

[red hill]

Thanks for your help, I get it now

[thorn hound]

PLZ

HELP ME

PLZZZ

IM SO CONFUSED PLZZZZZZZZ

[oak chasm]

@thorn hound What are you supposed to do?

[thorn hound]

find the inverse

of the black one

[ocean seal]

Chai T. Rex

Chai T. Rex

Chai T. Rex

[oak chasm]

What would the first step be?

[pastel island]

i need to figure out what times 35,000 would get you 1,000,000

[oak chasm]

@pastel island Sorry, channel is busy.

[pastel island]

oh

ok

sorry

[prime grove]

what do u want to do

inverse u said?

x = log 2 2y is the first step

then you undo the log i.e 2^x = 2y

solve for y would be dividing by two

(2^x)/2 = y

or 2^(x-1) = y

now its time for me to snag the channel 😄

need h3lp

[pastel island]

what the

i know none of this math talk

i'm in 9th grade

[prime grove]

bro just divide 1 mil by 35k

nd round down

[pastel island]

._.

[prime grove]

anyone?

[swift fern]

Anyone understand how to find the value of x?

[stuck kestrel]

15. 120 and 3x are supplementary angles

add them up

$3x=60$

[ocean seal]

logarithm

[stuck kestrel]

x = 20

[swift fern]

So would 15 equal 20

wait okay

[stuck kestrel]

?

no

[swift fern]

so 3x isnt 20?

[stuck kestrel]

3x is 60

not 20

[swift fern]

Oh

[stuck kestrel]

x is 20

if you simplify it

[gusty mural]

is this channel busy

[stuck kestrel]

yes]

ok

in 14th 2x-10 = 80

x = 45

[swift fern]

okay

so 16) 3x=120 right?

[stuck kestrel]

yes

x = 40

[swift fern]

Ok

[stuck kestrel]

done

[swift fern]

Thank you

[ocean seal]

Edwin25

[prime grove]

i am

i got it already lol

[thorn kindle]

,w d/dx log(x^2+bx+1)

[ocean seal]

Results provided by WolframAlpha

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

Requested by AMD#4434

[thorn kindle]

I mean youve pretty much solved it. b = -2x

[alpine sable]

I would like to know if i did it correctly 6 and 6b are really 12 a and 12 b btw

[thorn kindle]

There is always a value for which that is true. b in R

Based setup

@alpine sable looks good

[alpine sable]

Ok thanks for the confirmation

[buoyant kayak]

hypixel skyblock

my man

[alpine sable]

Im very confused abt 12c how would i figure that out

[alpine sable]

Yea i took a tiny break since i was doing a homework binge specifically for math

[buoyant kayak]

area of large region minus area of small region

[thorn kindle]

GigaChad

[alpine sable]

Ohhh that makes it much more easy thank you

[buoyant kayak]

👍

[alpine sable]

Yea during my break i was just looking at memes 😂

[thorn kindle]

I never thought gigachad would need help with distributive property

But i guess you're just too busy getting bitches

[alpine sable]

Bruhh 😂

[buoyant kayak]

happens to the best of us

[final crag]

how exactly would i do part B?

i got part A -- expected value was 10, variance was 90

it's a geometric distribution

[alpine sable]

Ohh i did it wrong i did not need to use distributive properties to find the areas of both the small and big rectangle 😂

[thorn kindle]

Parantheses

[alpine sable]

Oh of course ok i will add them rn

Ok so im assuming everything for that should be fine now right after i add the parentheses

[thorn kindle]

Right

[alpine sable]

Ok thank you so so much

[rich bough]

Hey so analytically how would i solve this?

my first reaction was to factor

but i didnt see m to get anywhere

as i factored to (x^2(2x-5))/(x-1)(x+1) and i didnt get anywhere from that

thoughts?

o and then i tried the organic chemistry method which was to plugin a number close to the limit

like in this case 0.9 but i got a 13.3 something

[rigid smelt]

you can try doing table like him

[rich bough]

table?

[rigid smelt]

yeah, plug in numbers

see where they appraoch

[rich bough]

my math teacher often strayed away from the method and said smth like it was a little tedious

i think i only really need to plugin 0.9

[rigid smelt]

you could also do the terms sperately

[thorn kindle]

@rich bough what is 1/0?

[rigid smelt]

try to evalute 2x^3 - 5x^2 and 1/(x^2 - 1)

so you get a product of limit

[thorn kindle]

No this is really simple

It's called a vertical asymptote

[rich bough]

dne?

does not exist

right?

[rigid smelt]

yes, which is what i said above

[thorn kindle]

Infinity is a number

[final crag]

@thorn kindle do u think u could help me next above?

[rigid smelt]

1/x as x appraoches 0 does not approach infinity

[rich bough]

OH SHOOT ROZIO

im sorry i didnt mean to take ur channel

[thorn kindle]

Now just find the sign of the infinity

[rich bough]

i didnt see anyone use it

[final crag]

haha its okay

ive been waiting for a while anyways atleast someone is getting helped in here xD

[rich bough]

wouldn't it be both?

or just one?

[thorn kindle]

There are things called one sided limits

[rigid smelt]

which you should really specify

[thorn kindle]

Which is what we're dealing with in the problem

And when you get into higher level math you really start treating all infinities as the same, regardless of sign

Reimann sphere

Anyways

@rich bough sign of f(x) to the left of x = 1?

[rich bough]

positive

wait

its the left of positive one btw

[thorn kindle]

My bad

[rich bough]

all good thank you for the help

positive

so it would be positive infinity

and dne?

or just positive infinity

[thorn kindle]

Positive infinity

But it depends on your calc teacher

[rich bough]

when would ik when its dne or not

in gen

[thorn kindle]

Its really just convention

Some calc teachers are assholes who are like "no theres no limit its infinite"

When in reality the limit is infinite

[rich bough]

pretty sure my teacher says "infinite or dne"

like he accepts both

[thorn kindle]

Just put +inf

[rich bough]

ok

someone also told me

in this server

that if the numerator

[thorn kindle]

It gives more info about the behavior to the left of the asymptote

[rich bough]

increases much faster than the denominator

then the limit approaches infinity

or negative infinity