document.write( "Question 920866: The width of a rectangle is
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document.write( "9
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document.write( "centimeters less than the length. The area is
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document.write( "136
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document.write( "square centimeters. Find the length and width of the rectangle. \n" );
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Algebra.Com's Answer #558631 by Hawksfan(61)![]() ![]() You can put this solution on YOUR website! A = L*W = 136\r \n" ); document.write( "\n" ); document.write( "W = L - 9 \r \n" ); document.write( "\n" ); document.write( "Substitute w in to the A equation...\r \n" ); document.write( "\n" ); document.write( "A = L ( L -9) = 136\r \n" ); document.write( "\n" ); document.write( "L^2 -9L - 136 = 0\r \n" ); document.write( "\n" ); document.write( "(L -17)(L+8)=0 \n" ); document.write( "L -17= 0 \n" ); document.write( "L = 17 \n" ); document.write( " \n" ); document.write( " L + 8 = 0 \n" ); document.write( " L = -8 \n" ); document.write( " L cant =-8\r \n" ); document.write( "\n" ); document.write( "therefore L = 17 \n" ); document.write( " |