SOLUTION: If y varies jointly with x cubed and the square root of z, find the constant of variation if y=12 when x=4 and z=49 Thanks in advance for all of your help

Question 550696: If y varies jointly with x cubed and the square root of z, find the constant of variation if y=12 when x=4 and z=49
Thanks in advance for all of your help
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
If y varies jointly with x cubed and the square root of z,
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y = kx^3*sqrt(z)
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find the constant of variation if y=12 when x=4 and z=49
Solve for "k":
12 = k*4^3*sqrt(49)
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12 = k*64*7
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k = 0.0268
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Cheers,
Stan H.
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