Asked by Anonymous

The value of y varies jointly with the values of x and z. When x=4 and z=9, the value of y is 360.

What is the value of y when x=5 and z=12?
Answered by Reiny
y = k (xz)
when x=4, z = 9, y = 360
360 = k(36)
k = 10
so y = 10xz

sub in your given values to find y
Answered by Anonymous
its 600 there you go.
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