document.write( "Question 301468: The area of rectangle ABCD is . If the width is 7 cm more than 3 times the length, what are the dimensions of the triangle?\r
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document.write( "Use a polynomial equation to solve the problem\r
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document.write( "It would also be helpful if you included the initial equation so I could understand it better. \n" );
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Algebra.Com's Answer #216166 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! AREA=L*W \n" ); document.write( "W=3L+7 \n" ); document.write( "20=L(3L+7) \n" ); document.write( "20=3L^2+7L \n" ); document.write( "3L^2+7L-20)=0 \n" ); document.write( "(3L-5)(X+4)=0 \n" ); document.write( "3L-5=0 \n" ); document.write( "3L=5 \n" ); document.write( "L=5/3 ANS. \n" ); document.write( "W=3*5/3+7=5+7=12 ANS. \n" ); document.write( "PROOF: \n" ); document.write( "20=5/3*12 \n" ); document.write( "20=5*4 \n" ); document.write( "20=20 \n" ); document.write( " |