SOLUTION: Use the given information to find the unknown value. y varies jointly as the square of x and the square root of z. When x = 2 and z = 9, then y = 48. Find y when x = 3 and z = 16

Algebra ->  Equations -> SOLUTION: Use the given information to find the unknown value. y varies jointly as the square of x and the square root of z. When x = 2 and z = 9, then y = 48. Find y when x = 3 and z = 16      Log On


   

Question 1128252: Use the given information to find the unknown value.
y varies jointly as the square of x and the square root of z. When x = 2 and z = 9, then y = 48.
Find y when x = 3 and z = 16.
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
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y varies jointly as the square of x and the square root of z.
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y=kx%5E2%2Asqrt%28z%29

k=y%2Fx%5E2%28sqrt%28z%29%29


The rest is done by substitution.

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

Use the given information to find the unknown value.
y varies jointly as the square of x and the square root of z. When x = 2 and z = 9, then y = 48.
Find y when x = 3 and z = 16.
Correct answer: highlight_green%28matrix%281%2C3%2C+y%2C+%22=%22%2C+144%29%29 

This will NOT give you the right answer: cross%28y=kx%2Asqrt%28z%29%29





cross%28k=y%2Fx%28sqrt%28z%29%29%29







The rest is done  by substitution.