SOLUTION: Let y vary jointly as x and the cube of z and inversely as the square of w. What is the affect on y if x increases by 20%, z is doubled and w is halved.

Algebra ->  Proportions  -> Lessons -> SOLUTION: Let y vary jointly as x and the cube of z and inversely as the square of w. What is the affect on y if x increases by 20%, z is doubled and w is halved.      Log On


   

Question 1033943: Let y vary jointly as x and the cube of z and inversely as the square of w. What is the affect on y if x increases by 20%, z is doubled and w is halved.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Literal translation for the first sentence: y=k%2Ax%2Az%5E3%2Fw%5E2

The second sentence asks for these changes:
Number     Should be changed to
x           1.2x
z            2z
w           (1/2)w


You will make reference to the original equation as you work through the changed formula.