Question

Y varies directly as X and inversely as the square of Z. Y=60 when X=20 and Z=2. find Y when X=75 and Z=5

Y=__

Answer 1

36..
y= k * x/z^2 ,, find k by putting in x,y and z

k=12
then find y when x,z are given as 75 and 5

Answer 2

Y=(12)20/2^2 ???

Answer 3

yeah... it comes out 60...

Answer 4

36 ANSWER