SOLUTION: y varies jointly as x and z and inversely as the product of w and p, and y=45/160 when x=5,z=9,w=5, and p =8 the directions are to find an equation of variation in which the f

Question 195415: y varies jointly as x and z and inversely as the product of w and p, and y=45/160 when x=5,z=9,w=5, and p =8

the directions are to find an equation of variation in which the following are true.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
y varies jointly as x and z and inversely as the product of w and p
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y = k[xz/wp]
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and y=45/160 when x=5,z=9,w=5, and p =8
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(45/160) = k[5*9/5*8]
(45/160) = k[9/8]
k = (8/9)(45/160)
k = 5/20
k = 1/4
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Therefore the equation is
y = (1/4)[xz/wp]
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Cheers,
Stan H.
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