SOLUTION: y varies directly as x and inversely as the square of z. y=32 when x=100 and z=5. Find y when x=3 and z=9.
Algebra
->
Coordinate Systems and Linear Equations
-> SOLUTION: y varies directly as x and inversely as the square of z. y=32 when x=100 and z=5. Find y when x=3 and z=9.
Log On
Linear Solvers
Linear
Practice
Practice
Answers archive
Answers
Word Problems
Word
Lessons
Lessons
In depth
In
Click here to see ALL problems on Linear-systems
Question 1086091
:
y varies directly as x and inversely as the square of z. y=32 when x=100 and z=5. Find y when x=3 and z=9.
Answer by
Boreal(15235)
(
Show Source
):
You can
put this solution on YOUR website!
y=kx/z^2
32=k*100/25=4k
k=8
Use k in the next part
y=8x/z^2
=8*3/81=24/81 or 8/27
