Question

helps meh again ? w varies jointly as x and y and inversely as the square of z. If w = 280 when x = 30, y = 12, and

z = 3, find w when x = 20, y = 10 and z = 2.

Answer 1

i believe the answer is between 0 and a billion :P

Answer 2

omg you are so smart

Answer 3

oh stop i blushh :P

Answer 4

oh stop it yew haha

Answer 5

w varies jointly as x and y and inversely as the square of z
w(z^2)/xy = constant = 280(3^2) / [(30)(12)] = 7
w = 7(xy) / (z^2) = 7x20x10/2^2 = 1400/4 = can you work out the answer?

Answer 6

Hahaa :)

Answer 7

350?

Answer 8

I think so, do you understand the workings?

Answer 9

kind of. enough.