SOLUTION: Suppose z varies directly as the square of x and inversely as y. If z=8 when x=4 and y=6, find z when x=6 and y=12
Algebra ->
Inverses
-> SOLUTION: Suppose z varies directly as the square of x and inversely as y. If z=8 when x=4 and y=6, find z when x=6 and y=12
Log On
Question 279787: Suppose z varies directly as the square of x and inversely as y. If z=8 when x=4 and y=6, find z when x=6 and y=12 Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Suppose z varies directly as the square of x and inversely as y. If z=8 when x=4 and y=6, find z when x=6 and y=12
------------
z = kx^2/y
---
Solve for "k":
8 = k*4^2/6
48 = 16k
k = 3
----------------
Equation:
z = 3x^2/y
find z when x=6 and y=12
z = 3*6^2/12
z = 3*3
z = 9
==================
Cheers,
Stan H.
------------
(