document.write( "Question 112247: The length of a rectangle is 4 inches less than twice the width. if the area of the rectangle is 240 sq inches, what is the length and width of the rectangle? \n" ); document.write( "
Algebra.Com's Answer #81892 by checkley71(8403)![]() ![]() ![]() You can put this solution on YOUR website! LENGTH=2W-4 \n" ); document.write( "AREA=L*W \n" ); document.write( "240=(2W-4)W \n" ); document.write( "240=2W^2-4W \n" ); document.write( "2W^2-4W-240=0 \n" ); document.write( "2(W^2-2W-120)=0 \n" ); document.write( "2(W-12)(W+10)=0 \n" ); document.write( "W-12=0 \n" ); document.write( "W=12 ANSWER FOR THE WIDTH. \n" ); document.write( "THUS THE LENGTH IS: \n" ); document.write( "2*12-4=24-4=20 FOR THE LENGTH. \n" ); document.write( "ROOF \n" ); document.write( "12*20=240 \n" ); document.write( "240=240\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |