document.write( "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\r
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\n" ); document.write( "\n" ); document.write( "the directions are to find an equation of variation in which the following are true.
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Algebra.Com's Answer #146554 by stanbon(75887)\"\" \"About 
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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\n" ); document.write( "y = k[xz/wp]
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\n" ); document.write( "and y=45/160 when x=5,z=9,w=5, and p =8
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\n" ); document.write( "(45/160) = k[5*9/5*8]
\n" ); document.write( "(45/160) = k[9/8]
\n" ); document.write( "k = (8/9)(45/160)
\n" ); document.write( "k = 5/20
\n" ); document.write( "k = 1/4
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\n" ); document.write( "Therefore the equation is
\n" ); document.write( "y = (1/4)[xz/wp]
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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