SOLUTION: (a) y varies jointly as x and w and inversely as the square of z. Find the equation of variation when y=100, x=2, w=4, and z=20. (b) Then solve for y when x=1, w=5 and z=4. Ple

Algebra ->  Graphs -> SOLUTION: (a) y varies jointly as x and w and inversely as the square of z. Find the equation of variation when y=100, x=2, w=4, and z=20. (b) Then solve for y when x=1, w=5 and z=4. Ple      Log On


   



Question 1130524: (a) y varies jointly as x and w and inversely as the square of z. Find the equation of variation when y=100, x=2, w=4, and z=20.
(b) Then solve for y when x=1, w=5 and z=4.
Please show me how you get the answer, thanks.

Answer by josgarithmetic(39613) About Me  (Show Source):
You can put this solution on YOUR website!
---------
y varies jointly as x and w and inversely as the square of z.
---------

k, variation constant

y=kxw%2Fz%5E2



---------
Find the equation of variation when y=100, x=2, w=4, and z=20.
---------

Simply substitute and solve for k.

Similar for (b). Substitute and solve.