Question

Ok i know this is easy but it confuses me when it says w and t vary inversely. LIke i dont know how i should set this up can you explain? Suppose that w and t vary inversely and that t = 1/5 when w = 4. Write a function that models the inverse variation, and find t when w = 9.

Answer 1

@Disco619 @annas help?
@Opcode @beccaboo333

Answer 2

Sorry, I'm of no help here.

Answer 3

w = 4, as w = 9. w=4 and k= 20, so k/w should be 20/4 = 5.

Answer 4

I'm 50% sure.

Answer 5

So when i set it up it would look like this?

Answer 6

t=k/w?

Answer 7

Probably.

Answer 8

when,
w = 4
t = 1/5

w = k/t
4 = k/(1/5)
4 = k/5
k = 20.

knowing this substitute the new W and the K to the equation solving for Tnew

w = k/t
t = k/w
t = 20/4
get it?

Answer 9

See! Totally what I said. Just smarter. ♥ Thank you Annas.

Answer 10

Welcome :D

Answer 11

Ok i get it now thanks :)

Answer 12

^_^ my pleasure

Answer 13

one more medal & I'm on 200 ^_^

Answer 14

wait! t=20/4 is not an answer choice D:

Answer 15

my choices are

t = one over five w; four over forty-five
t = one over five w ; one-fifth
t = one over twenty w; one over 80
t = four over five w; four over forty-five

Answer 16

sorry we need to find when W= 9
so t = 20/9

Answer 17

oh ok i think i got it now :)

Answer 18

okies :)

Answer 19

can I have a cookies now ^_^

Answer 20

*gives cookies* :)

Answer 21

yay xD