document.write( "Question 315792: If b is inversely proportional to the square of c and b is 5/9 when c is 3, find b when c is 5.
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Algebra.Com's Answer #225937 by ankor@dixie-net.com(22740)\"\" \"About 
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If b is inversely proportional to the square of c
\n" ); document.write( "b = \"1%2Fc%5E2\"
\n" ); document.write( "let k = constant of variation
\n" ); document.write( "b = \"k%2Fc%5E2\"
\n" ); document.write( ":
\n" ); document.write( " b is 5/9 when c is 3, find k
\n" ); document.write( "\"5%2F9\" = \"k%2F3%5E2\"
\n" ); document.write( "\"5%2F9\" = \"k%2F9\"
\n" ); document.write( "cross multiply
\n" ); document.write( "9k = 5*9
\n" ); document.write( "9k = 45
\n" ); document.write( "k = \"45%2F9\"
\n" ); document.write( "k = 5
\n" ); document.write( ":
\n" ); document.write( "b = \"5%2Fc%5E2\" is the equation
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\n" ); document.write( "find b when c is 5.
\n" ); document.write( "b = \"5%2F5%5E2\"
\n" ); document.write( "b = 5/25
\n" ); document.write( "b = \"1%2F5\"
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