#help-0
1 messages · Page 791 of 1
it do be 21 tho
what is this
degree
ok could i get help with this?
Write 0.000000000000412 in standard form?
yea
4.12x 10 somthing
so
angel bcf
is 38
and triangel DBC
since line BD and DC
"Assume that functions f and g are differentiable with f(-2) = 3, f'(-2) = -4, g(-2) = 2, and g'(-2) = 5. Find and equation of the line tangent to the graph of F(x) = f(x)g(x) at x= -2"
Is same
wait should i go to diff one now
so the triangle
is isolate
or somthing
so it both 38degree
the thired angle is 102
oh
oh yea
and
the z bit
i forgot
since it dg and cf
is pallel
angle bcf is same with dbc
it say in question
and the
image
have the
arrow
i copyed it down
yea
sorry rip
but am i right
for x=72
ok
i cant ss
im on laptop
sad that y i draw it
oh
ok
emm
ok
yea
oh
i see
im still unsure
but i think
i understand it
wat topic is it
im gonan watch on yt to see
ok
ok
but i cant
take
a image of it
yea
i can type it out
there is
can i see ur steps🥲 ? im havin trouble with tat too
Can anyone help me out with statistics?
-8,-3 and -1,-2 whats the slope that goes between them?
AE DBG CF are parallel
DA =DB=DC
angle EAB=angleBCF=38 dregess
dm me
sureee, i truly appreciate it
Can i post an image here? I need help and I did a sort of scheme
So, this has to do with programming, is there a sort of formula that given degrees, it gives me a coordinate (in this case, x and y)?
I also inserted some examples of the outcomes I would like to create given some degrees
Sure, I need to draw gradients, and thus I need a sort of formula to give me the x and y coordinates of the drawing points given degrees
If i want to create a gradient with 0 degrees, the first colour should start at x=half width, y=0 and end at x=half width, y = height
The numbers (x and y) on the right are an exact position the starting point should be
With the starting point I could then retrieve the ending point because it is the inverse from the center
However I am not sure this question is good on this server, but I thought there have to be a sort of calculation specific for this problem
Yes, deg is a number between 0 and 360
Sure, I wanted to avoid that
But I found a method, using sin and cos function
yes, but you need a radius. If you want to do your own research look up polar coordinates.
The basic premise is that it uses (radius, angle) to plot points.
You can then convert that to cartesian (x, y) like this:
x = r × cos( θ ) y = r × sin( θ )
another way to go about it is start with the x, y coordinates, then use inverse tangent to find the angle at that coordinate
I don't have the x y coordinates, I need to find them given the degrees and a square
wait im confused, did you define deg 315 => x =0, y = 0, or was that given?
because you cant define an angle to a point
an angle covers all radii with that angle, meaning an infinite number (or finite if its confined to a box, but still more than one) of (x, y) coordinates for that angle
If I give 315 i want the starting point to be x=0, y=0
so you only want to use the edges?
Exactly
ah ok
well in that case you do have the x, y coordinates.
when y = 0
x = 0, 0.1, 0.2, 0.3,...1
when y = 1
x = 0, 0.1, 0.2, 0.3,...1
when x = 0
y = 0, 0.1, 0.2, 0.3,...1
when x = 1
y = 0, 0.1, 0.2, 0.3,...1
To make it clear, if i give 135, I need the starting point to be x=1, y=1
Cause it is the bottom right corner
How would you approach this problem?
@wind hawk Here I used degrees to retrieve the correct x,y coordinates but not mapped to a square, but to a circle
you need to draw gradients, right? so why are you just using the edges?
Cause I need to draw gradients in a square
but what kind of gradient, circular?
No, linear
then why are you using 360 degrees?
wait maybe that wasnt claer
do you want it to look like this?
(but in a square)
@karmic sleet
I found U5 to be 37 but idk how to go from there
Generalize part a to do part b
To find u5 you needed S5 and S4
Or S(5-1)
I got U5 = 37 by doing Un = Sn - Sn-1 but now that i have U5 idk what to do to complete B
I think that what you described is precisely the method you should use.
Indeed, since:
S(n) = u(1) + u(2) + ... + u(n - 1) + u(n)
and
S(n - 1) = u(1) + u(2) + ... + u(n - 1)
then subtracting them yields:
u(n) = S(n) - S(n - 1).
Now, you already have S(n) in terms of n. Can you figure out how to express S(n - 1) in terms of n?
I need help with laplace / controls stuff
With some given transfer functions I'm supposed to use the step u(t) = 1 t>= 0 and check in which cases the output goes to a constant value when t goes to infinity. Find said value
hi
for example G(s) = 3 / (s+5)
It's to do with final value theorem but our professor just didn't show how to use it, yay
brooo
What
Are the math majors scared of electro engi 
Maybe
who?
find the circumference of these circles
Oh
To find the circumference you have to do d*Ï€ where d is the diameter
Since all of the circles have only the radii listed you have to replace the d in the formula with 2r as the radius is half of the diameter
Bro I never done this shit before
Ok do you know what a radius is
No
The radius is that line from the center of the circle to one of the edges
Yea so the highlighted part
So now you multiply the length of that by 2
Ok
What is that sign?
Yk like 3.141593654...
Hm??
But what grade are you in
8
Ah
Ye
Then you'll probably just have to use 3.14
No
You do know that the instructions for how to do this are on the sheet right
It even says what pi is and how to find the circumference
Yeah ik what it is
Are you just trolling
Yeah I do
Ok
So pi is how many times the diameter goes in the circumference
That's why you get the circumference if you multiply the diameter by pi
And the diameter is the length across the middle of the circle from on edge to another
So the radius is half of that since it's only from the middle of the circle to one edge
Ohh
So when you only have the radius you first multiply it by 2 to get the diameter
Then you multiply that by 3.14 to get the circumference
Or close to it
pi goes on forever
That's why I do the ...
Since you can only ever get an approximate value
When you're older you won't have to multiply by pi and you can just leave the symbol in the answer
Ok so I times
Can someone tell me what.I did wrong?
So that equals 6.28
Sowwy
Lmao
Loll
Does it look right?
Umm
Can you tell me?
18.84
What
I spent like 8+ hours on a few problems I need a break
That is the answer for the first one
Bruh
Tho
@elfin fiber You multiply the diameter by pi to find the diameter of the circle, not the radius with pi
Here I'll explain with an example from the first one since I already told you the answer
Because then you don't have the whole circumference of the circle
$3\cdot{2}\cdot{pi}$
How do I know the diameter for the first one?
Lil Sachi
Cause the radius is half of the diameter
multiply the radius by 2
Oh ok
Yeah so
3*2*pi=6*pi=6*3.14...=18.84 approximately
Do that for all the other ones but fill in the numbers
So I Pi is 3.14
About
because 3.14 times the diameter is the circumference of the circle
Just use this formula Circumference=2 times radius times pi
All of them only give you the radius
I only highlighted the whole thing green to show you the difference between the radius and diameter
Ok
2 times pi
That's the answer
The diameter is 2 and you have to multiply that by pi
Yeah 6.28
Omg tysm
See math isn't so bad
Yeah approximately
Alr
A bit less than 2
Is the third one diameter?
No
How do I know if it’s diameter or radius?
Radius
Diameter is the one from edge to edge
Radius is the one from center to edge
Lmao
I already showed him one lmao
Diameter is green, radius is red
Ah kk
25.12
Yeah screw you too lol, you keep sayin bro and when I say bro you never corrected so how is it my fault lmao
Yeah
The third one is 25.12
Correct
Yep
yes
Wait no
Lolll
2.5*2=3
,w 5 * pi
3*pi=9.42
No I think it’s 5
Wait nvm
I used calculator idk tho
Sorry
Lol
Yeah
Np
I thought it was 1.5 for a bit
Lol
Yeah so you're good
How to add??
2.5*2pi=\5pi=15.7
Hahahah I’m jk
Hrm?
Imaoo
Lmaoooo
Lol
Thank you for using the Jimmy Neutron math help service, your ticket number was 0002 but we have just closed your session for you as a result of your problem having been resolved or deemed unresolvable. If you need any help requiring it just send it back to us via direct message.

nice
I am for a fact mentally defficient but
This is an automated response, messages out of sessions will not be checked unless a new session is created or an old one is reopened.
Wait really
how does someone go from 1 / (Ms^2 + k) to 1 / (s^2 + sqrt(KM)^2)
Who knows
They're aiming to get the expression to follow 1 / s^2 + a^2
Why does a birb even have to do math lmao
idfk will you help or not
I get the sqrt(k)^2 part
can you post full question?
The dude skips just a few steps before doing the inverse
He wants it in the form of 1 / (s^2 + a^2)
Basically what he ends up reverse transforming is 1 / (s^2 + sqrt(KM)^2)
is this from yt vid or something
link?
Get the map of control theory: https://www.redbubble.com/shop/ap/55089837
Download eBook on the fundamentals of control theory (in progress): https://engineeringmedia.com
This lecture describes transfer functions and how they are used to simplify modeling of dynamic systems. I will be loading a new video each week and welcome suggestions for n...
I think he messed up
since he's not consistent
hi again
which question
First one
What
z = 4 - 7
you need to only have z on one side without anything else
What about second ques
since -3 + 7 = 4
4 = 4
w + 5 = 5
w = 0
channel in use
Help second ques pls
.
channel busy?
yes
okay
First one is 6?
no
equation mean you have need to have the same result on both sides
if you insert 6 in $z + 7 = -4$ you get $6 + 7 = -4 \ 13 = -4$ and there isn't the same answer on both sides now
Lil Sachi
Oh no
?
make g stand alone on the left side by subtracting both sides by 7
what is 13 - 7?
channel in use?
yes
yes, now you got the answer
Ok
g + 7 = 13
g = 6 because 6 + 7 = 13, 13 = 13
Is c 0?
Yeah
no
yeah
${\color{green}{5}}$
@sinful relic
Lil Sachi
$\color{green}{p}-\color{red}{9}=\color{pink}{16} \ \color{green}{p}-\color{red}{9}+\color{red}{9}=\color{pink}{16}+\color{red}{9} \ \color{green}{p}=\color{red}{25}$
Lil Sachi
answer there @elfin fiber
$\color{green}{p}-\color{red}{9}=\color{pink}{16} \ \color{green}{p}-\color{red}{9}+\color{red}{9} \ \color{pink}{16}+\color{red}{9} \ \color{green}{p} = \color{red}{25}$
25??
Lil Sachi
hey I know p != q
I need to prove that not p != not q
can I do this via contrapositive?
do a chart and bash
Help
with what
That is the opposite operation of division?
Idk?
for the 3. problem just multiply both sides by the denominator
and for the 5. problem just divide by the coefficient of the unknown
I don’t get it
Can u show me how to do the first one?
problem 3 is of the form x/a = b then x = a*b
problem 5 is of the for ax = b then x = b/a
(x/4=11) * 4
x = 44
How did u get that 44?
Using math, 11 * 4
nice
?
hey I know p != q
I need to prove that not p != not q
can I do this via contrapositive?
just make a chart for if p=true for false
with contrapositive, you could prove not q != not p
then it is the same if you put rhs as lhs and lhs as rhs
What do I do for 5 @wary stream
The opposite operation
You divide
Division?
Yes
that's what' I wanted to prove?
@mystic sinew thats how you can prove it with contrapositive.
yes
How do I do 2r = 18??
as you can flip lhs and rhs
Divide by 2
This one
On both sides
Yes
to solve k*(random variable)=n. if (k!=0) you have that the random variable = n/k.
You started with 2r = 18, you divide by 2 on both sides
So $$2r=18 \implies \frac{2r}{2} = \frac{18}{2} \implies r = 9$$
dldh06
Ohh I see
?
What about 12g = 144
same
divide by 12 on both sides meaning rhs and lhs
what class u in ?
8
lol
but theres more to it, idk what opposite method means but theres an easier way too probably u know it too wait ill tell u by doing a question
I got a weird answer
12 ?
YeH
yes its correct
The second one
congo
Which one?
The 12g = 144
It said opposite operation, because all had multiplication involved
No
Yeah
Hmm I see
So whattt
$$144/12 \neq 0.8333$$
dldh06
Maybe I was doing it the easier way
Yeah
How did you calculate that number?
It's true those are not equal
What’s the answer?
144 by 12 is 12
Use the times table
What
Don't give answers like that
I'm trying to walk them through how to find it
How is it 12??
Oh yea
How did you calculate this?
Do 12×12
I did 12 divided by 144
144 divided by 12 it should be
Or brain? Or what?
Maybe
Lel
You typed it wrong
Did you type exactly 144/12?
Those are simple calculations don't use calculator it will gell u in future
In the calculator
Yeah
No you didn't
Lolll
Hm??
I wrote 144 and then 12
Imao
You shouldn't have gotten 0.8333 if you typed 144/12 in a calculator
College
Oh sorry
Yeah the other way around I meant oof
Did you mean 0.08333?
Yeah
Lol
Like there's an extra 0?
Yeah
Because 0.833 and 0.08333 were two different numbers
Sed
No
No
The third part ?
Wrong
Lol
So what did you do?
See wait I'll tell u a thing
Yeah
What do you mean
No, you divide by the number next to the variable
It divides
What number is next to the variable?
Exactly
Also, repost that assignment because it's buried now
Because I'm not scrolling back up to just reread the problem
Btw which stream did u choose in 11th ?
I choose science
Stream?
Yea
I'm from US, we don't pick our path
Guys
Curious ^_^
The answer is 0.5?
The classes they gave me
Yes
I'm from India here they give streams on bases of marks
What is streams?
Ummm like
It's
This moment of choosing, for students in India, comes after the Class 10 examinations. This is the golden moment of reckoning when a student has to choose between the three streams in which they would further pursue a career – Science, Commerce or Arts/Humanities. ... Commerce. Science. Arts/Humanities.
here
googled it
Ohhh
it was kinda hard to explain loll
Umm @wary stream I want to know more
Yz
Yes so, x is the variable u need to find what u should multiply by 6 to get 36
You did math wrong
Oh noo
Divide by the number next to the variable
Plsls
Not the other way around
Soooo
Don't clutter a math help channel with off topic conversation
6 by 36?
No
Omgggg
What number is next to the variable?
6
Divide by 6
6?
Well do u know like what happens between rhs and lhs ?
Yeah
Stop trying to confuse the kid by asking what value multiplied by what to get that value
As I said, divide by the number next to the variable
What number is that?
6
Y- yes sir
So divide by 6 on both sides
So the answer is 6?
If you read the directions, it literally stated opposite operation, and all of those are multiplication, so it wants division, not some other technique
Yes
Ok
Yea ?
That's what I am doing too
But you're saying multiply blank times blank to get blank, that's not the opposite of multiplication.
No no that's so that I could tell the meaning of that question
Like what's it asking
It was asking apply the opposite operation to find the variable, and the opposite operation is division
It is saying what to multiply to 6 to get 36 so if we divide 36 by 6 (36/6) we would get it
It's division
e) is 10
f) is 3
g) is 3
h) is 25
I) is 3
J) is 11
K) is 1
L) is 4
M) is 6
N) is 4
Pro
Did u look somewhere lmao
No
Those are right tho
It's all good
This is just basic math, use a times table instead of a calculator
Okk
The only difficult one would have been 5/10, but besides that, everything is knowing your times table
Yeah
True
I have some of the word problems
Idk how to them
I’ll do them tmrw
👌
how can i derivate: $6sh -\frac{3s²\sqrt{6}}{4} + \frac{s²\sqrt{6}}{2} +\frac{\sqrt{6}}{2}$ with respect to sh ?
Guilhotina
is that multi var calculus??
i don't see multi var calc and this exercise is at the end of optimisation problems
$6sh -\frac{3s²\sqrt{2}}{4} + \frac{9s²\sqrt{2}}{4}$
is the right one
Guilhotina
Well if you're differentiating with respect to sh you only have the first term there
The rest are constants
iirc
If there is a 20% chance that Person A wins a race and 30% chance person B wins a race, then how do you calculate which one wins the race? O_O
most likely neither, since there's 70% B didn't win, and 80% A didnt
Ty.
What if it was 60% and 40%?
You can't exactly calculate which one wins the race...
that too
You can only calculate the probability
This is kinda new to me T_T, trying to wrap my head around this bit.
How do I calculate the probability? Or is the 40% and 60% already the probability?
Not sure if I'm being an idiot here.
clearly 40% and 60% are probabilities
That's what I thought hmmmmmmm
I need to figure out something a lot more complicated. I guess this direction isn't the right one. Thanks for the replies.
Could I get some help when someone is available
i have a question
how do people know how many years people have watched a video
like The song Baby shark has been played 7.04 billion times
Played back-to-back, that would mean Baby Shark has been streamed continuously for 30,187 years.
like how do you calculate that
$$\text{Amount of times} \cdot \text{duration in seconds} $$
unit conversion
dldh06
Then convert that value to years
Commas or decimal?
do i just 25 * 1.042.136
So a 25 minute video is 25 times 60 seconds
1500
,calc 25( 60)
Result:
1500
,calc 25 * 60
Result:
1500
So 1500 times 1,042,136
so 1500 * 1042136
Is how many seconds have been played
hello
,calc 1500 * 1042136
Result:
1.563204e+9
Convert that to years
Online calculator is easiest
can u recommend any
Give me a minute to type it out because I'm on mobile
oh ok
$$\frac{1563204200 \text{secs}}{1} \cdot \frac{1 \text{hour}}{3600 \text{secs}} \cdot \frac{1 \text{day}}{24 \text{hour}} \cdot \frac{1 \text{year}}{365.24 \text{day}}$$
Only thing was I accidentally flipped it
It should be hour/sec
Day/hour
Year/day
It should be 1563204200/(3600*24*265)
Thank you
dldh06
There, fixed
By opposite, if you mean multiply, yes
no i meant like 49 years / 365 / 24 / 3600 = 1536204200
is it just like that
oh wait nvm
I forgot how to find the angle of this line. anyone able to help?
Law of cosines
tan(theta)=m
I just got into 9th grade. should I have learned that? because I dont even know what tan or cos is
I mean... you should know trig to find the angle
so yes
You need trig unless you want to hold a protractor and be inaccurate
k
thanks
just want to confirm
the answer is D right?
because solving for G = -1 and H = 5
and squeeze theorum states g(x) = h(x)
and if that is true f(x) will = what g(x) and h(x) equaled
In December 2018, the average price of regular unleaded gasoline excluding taxes in the United States was $3.06 per gallon. Assume that the standard deviation price per gallon is $0.08 per gallon and use chebyshevs inequality to answer the following.
- What minimum percentage of gasonline stations had prices working 2 standard deviations of the mean?
- What minimum percentage of gasoline stations had prices within 1.5 standard deviation of the mean? What are the gasoline prices that are within 1.5 standard deviations of the mean?
- What is the minimum percentage of gasoline stations that had prices between 2.74 and 3.38
Anybody can help?
Just use the distance formula
I did i got 12 but it says wrong
That's already not possible to get. There should be a radical still
How?
when i added them together it gave me 12
That's 5.1 not 5.0
what about the others? were those also rounded incorrectly?
dldh06
🤔 mk now what abt the other answers?
All the others are good
It was just probably the accuracy of your answer
,w sqrt((-5--2)^2+(4-1)^2)
so the answer would be 4.24?
As I said, keep the radicals
So $\sqrt{18} = 3 \sqrt{2}$
dldh06
For what?
for the perimeter
But how?
i added all the radicals together
If you have a side that's 5 and 4, that's already more than 8
bestie idk i been stuck on it since morning
try to solve it
and tell me
what u get
if u want
u dont have to
😩
I'm not telling you what the answer is, I'll confirm if you're answer is correct after you get an answer
As I said, that's not it
Because if $\sqrt{26} \approx 5$ and $\sqrt{18} \approx 4$, that already adds up to more than 8
dldh06
Is this channel busy
Yes
okie can u ping me when it’s not?
No
hmm
Smh 💀
So if 2 sides already is greater than 8, that means your answer is not correct
What did you type in the calculator?
i typed 5+4+2
i took out the decimals
Keep the decimals for more accuracy
Use sqrt(26), sqrt(18), and sqrt(8)
The reason your answer isn't correct is it's not accurate enough
is this channel still busy
yes
,w sqrt(8)+sqrt(26)+sqrt(18)
