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document.write( "The length of a rectangle is three feet more than twice the width. The area is 90 square feet. What are the dimensions of the rectangle? \n" );
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Algebra.Com's Answer #451066 by checkley79(3341)![]() ![]() ![]() You can put this solution on YOUR website! AREA=LW \n" ); document.write( "L=2W+3 \n" ); document.write( "90=(2W+3)W \n" ); document.write( "90=2W^2+3W \n" ); document.write( "2W^2+3X-90=0 \n" ); document.write( "(W-6)(2W+15)=0 \n" ); document.write( "W-6=0 \n" ); document.write( "W=6 ANS. FOR THE WIDTH. \n" ); document.write( "L=2*6+3 \n" ); document.write( "L=12+3=15 ANS. \n" ); document.write( "PROOF\" \n" ); document.write( "90=6*15 \n" ); document.write( "90=90 \n" ); document.write( " |