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nope

Which part isnt right?

Goddammit this is just hopeless..

hi Inopeki
do not despair!
practice practice...

what made you feel like putting a 13 there?
we were supposed to get a function like before

And didnt i?

13+s/p=2
what do you get multiplying both sides by p?
do nothing else but that.

I can go check

no, I was wrong, nevermind

13+s/p=2 for p
11+s/p=0
11=-s/p
p=-s/11

See? This guy knows it. Why cant i?

Whatever. give me a new one

You can with Time Inopeki

a new one?
solve\[A=2\pi r h\] for A, r, and h
I need to get you to stop thinking in numbers.

that's three problems, by the way.

is \[\pi\] 3.14 here or is it a variable?

A=2(pi)rh

Ok, so the answer should not be a number?

not at all

Interesting..

it should be a function like
r=5t+4
it has some numbers, but not all.

One question. If i, in the answer have to give you As "definition", how can that not be a number?

if I tell you the radius and height of our particular cylinder, only then can you get a number.

I just studied that in school! I thought we were talking algebra here..

Solving for a variable is algebra. They are all connected as you will learn.
Thanks Akshay!

But that still doesnt answer my question, how should i define A?

We can divide h with A, right?

No.. that cant be it.

The height.

is that all?

Actually no

what else?

pi^2

right?

where did you see a squared term?

I have no idea.. i realize thats wrong now cause that is for getting the volume of a cylinder..

And that concludes that i am an utter and complete retard

it's okay.
so again, what, in all, is r being multiplied by?

c'mon, being hard on yourself never helped anything.

2 and then pi

and...?

height?

wait!

right, it's being multiplied by
2(pi)h
so that is what we need to divide by
no don;t take it back!

if you divide both sides by h, and both sides by pi you should isolate it so you have 2r, right?

true!

Yeah.. pretty much what you said

But that doesnt mathematically give us anything..

Then you just divide both sides by 2 and get r

What do you mean?

what is on the other side of the equation when we solve for r?

what did we divide both sides by?

2(åi)h?

(pi)*

right. so what will A be divided by?

well we get r on both sides right?

2(pi)h

where did you get 1 ?

Nevermind, my mind is messing up my mind, if you know what i mean

Maybe i should catch some sleep, its 4:50 am here..

Good night, thank you for all the help!

anytime :)

Actually, just b.

I would then get a/b=c/b
Simplified, a=c/b

^^^correct!
now get some sleep dude!
the mind needs to be fresh.

I did sleep, that answer was today.

lol I thought you stayed up all night.
Told you sleeping on it would help.
now solve
ab=c
for b

Thats easy, both sides divided by a, you get b/a=c/a
Simplify: b=c/a

no!

yes^^

actually, yes

that's what I wanted to hear
since it's so easy
A=2πrh
for r

Divide both sides with 2(pi)h, you get A/2(pi)h=2(pi)rh/2(pi)h
Simplified: A/2(pi)h=r

Yes!
Oh ok.

sorry, meant
A/(2πh)=r

anyway, slightly different one:
solve
5t=t/2+s
for s, then for t

So the whole bottom part in parenthesis?

that's two problems^^^

Multiply both sides by 2+s, right?

Oh, i thought you meant t/(2+s)

Right, so now i have 5t-t/2=s, am i right?

totally, but can you simplify the left a little?

5t-t/(2)?

It cant be 4t/2

Nope

Yeah

Where did you get the 10?

Oh, i knew that, i still dont see where the 10 and 9 come from...

Wait, i see now! 5t *2/2 should become 10/10 though...

now solve it for t

5t=t/2+s?

I have to isolate t by getting away the 5, right?

Divide both sides by 5?

10t=t+s, i guess?

what about s? didn't it get multiplied by 2 as well?

oh right, 10t=t+2s

so now you should be able to solve for t...

Now divide both sides by 10?

Then we get t=t+2s/(10)

I really dont know...

hint: combine like terms, we want the t's together
10t=t+2s

subtract t from both of them?

turing can u hlp me?

TT, shouldnt you do your homework first?

Oh, ok. Now he have 9t=2s

good, now what?

We have no other choice but to divide them by 9. Do we get t=-4.5s then?

you say you divided by 9 but \[2/9\neq -4.5\]

Yeah, i have no idea what happened there..

so go again...
9t=2s

leave as a fraction

How do i divide 2 by 9?

just like I wrote it: 2/9

wait!

Oh nevermind.. so t=2/9s?

2s=9t?

good, what next?

Divide by 2?

that would solve it for s, right?
we wanted to solve for t...

Oh right

Divide by 9

yes, which gives what as the answer??

2s/9=t

I see!

I have to eat, brb

me too, good idea, breakfast!

Hah, i hade dinner.. You there?

yep, where were we?
yz/(z+4)=7
solve for y

good but you forgot to distribute the 7
yz=7(z+4)
do you know what I mean by distribute?

the parenthesis?

I knew that :D

so what should you have gotten after you multiplication?
yz/(z+4)=7

Oh well, yz/(z+4)=7----->yz=7(z+4) ----->y=7(4)? Can i do that?

i have 7z and 7*4=yz

7z+7*4=yz

good, now feel free to multiply the 7 and 4...

28

write thew whole expression every time

the*

yz=7z+28?

This must be like teaching physics to a mentally challenged monkey..

Without all the throwing of feces

stupid server is very slow today :(
yz=7z+28
what can we do next to solve for y ?

Yeah :/ subtract 1z from both sides, getting y=6z+28

Division, right. Divide both zs by 2?

will that isolate y ?
why divide by 2 ?

I dont really know.. Maybe divide by z?

yes, see you do know!

yz=7z+28----->y1=7z+28?

y*

almost, but you didn't divide the right by z...
always gotta do BOTH sides

Ah,, y=7+28=35?

y=7z+28/z?

what about the 7z
now you forgot to divide that term by z...
gotta do both

But you said i shouldnt drop that z? y=7+28/z?

Awesome!
Ok i got this..

Im sorry for the delay, openstudy crashed for me

5(2+1/r+r)

2x(x)-1/x?

2x(x)(-2x)(1/x)?

no, sorry, I think you need to practice division..
2x(x-1/x)=2x(x)-2x(1/x)=2x^2-2
what is
a(1/a)=?

a? I dont know.. This is just hopeless! Do i really need all this for physics?!

2a?

yes, good!
here are a few for practice
x(5/x)=?
3y(1/y)=?
z(2/3z)=?

5x
3y
2/3z

5
1
2/3
I dont know.. Do i need to know much more before i cant start with trigo or calc?

That sucks... Are you sure that it will take a year?

What book do you reccommend?

Is all the algebra i need included in khanacademy?

Algebra book*

Yeah, ill do that.

Where were we, algebra wise?

So im pretty much still at square 1?

Just the first part? (Algebra properties)

once you know them*

Alright.

I think i know all the first ones

Thanks again for all your help!

you're welcome
I'll see you when this site starts working properly again.
Keep it up, and good luck!

Thanks :)