document.write( "Question 551373: if the length of the rectangle is one foot less than the width and the area is 12ft squared ,find the dimensions.
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Algebra.Com's Answer #359694 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! if the length of the rectangle is one foot less than the width and the area is 12ft squared ,find the dimensions. \n" ); document.write( ". \n" ); document.write( "Let w = width \n" ); document.write( "then \n" ); document.write( "w-1 = length \n" ); document.write( ". \n" ); document.write( "w(w-1) = 12 \n" ); document.write( "w^2-w = 12 \n" ); document.write( "w^2-w-12=0 \n" ); document.write( "factoring: \n" ); document.write( "(w+3)(w-4) = 0 \n" ); document.write( "w = {-3,4} \n" ); document.write( "throw out the -3 leaving: \n" ); document.write( "w = 4 feet (width) \n" ); document.write( ". \n" ); document.write( "Length: \n" ); document.write( "w-1 = 4-1 = 3 feet (length) \n" ); document.write( ". \n" ); document.write( "solution: \n" ); document.write( "4 feet by 3 feet \n" ); document.write( " |