document.write( "Question 766384: Write an equation or formula that represents the general relationship indicated. Then use the given information to find the unknown value. \r
\n" ); document.write( "\n" ); document.write( "W varies jointly as x and y and inversely as z. If W = 10 when x = 6 and y = 5 and z = 2, find W if x = 12 and y = 6 and z = 3.
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Algebra.Com's Answer #466888 by Cromlix(4381)\"\" \"About 
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W = kxy/z
\n" ); document.write( "k = constant of variation
\n" ); document.write( "To find k use values given.
\n" ); document.write( "W = kxy/z
\n" ); document.write( "10 = k*6*5/2
\n" ); document.write( "10 = k30/2
\n" ); document.write( "20 = k30
\n" ); document.write( "k = 20/30
\n" ); document.write( "k = 2/3
\n" ); document.write( "W = 2/3*x*y/z
\n" ); document.write( "W = 2/3*12*6/3
\n" ); document.write( "W = 48/2
\n" ); document.write( "W = 24.
\n" ); document.write( "Hope this helps.
\n" ); document.write( ":-)
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