document.write( "Question 607174: Please can you help me with this problem. I really do appreciate your help...\r
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document.write( "The width of a rectangle is 6 kilometers less than twice its length if its area is 80 square kilometers find the dimensions of the rectangle?
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Algebra.Com's Answer #382482 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! The width of a rectangle is 6 kilometers less than twice its length if its area is 80 square kilometers find the dimensions of the rectangle? \n" ); document.write( "** \n" ); document.write( "let x=length \n" ); document.write( "2x-6=width \n" ); document.write( "Area=length*width \n" ); document.write( "80=x(2x-6)=2x^2-6x \n" ); document.write( "2x^2-6x-80=0 \n" ); document.write( "x^2-3x-40=0 \n" ); document.write( "(x-8)(x+5)=0 \n" ); document.write( "x=-5 (Reject) \n" ); document.write( "or \n" ); document.write( "x=8 \n" ); document.write( "2x-6=10 \n" ); document.write( "ans: \n" ); document.write( "length=8 km \n" ); document.write( "width=10 km \n" ); document.write( " \n" ); document.write( " |