document.write( "Question 112526: the area of a rectangle is 80 square feet and its length is 1 foot more than 3 times its width.find its width. \n" ); document.write( "
Algebra.Com's Answer #82077 by checkley71(8403)![]() ![]() ![]() You can put this solution on YOUR website! AREA=L*W \n" ); document.write( "L=3W+1 \n" ); document.write( "80=(3W+1)W \n" ); document.write( "80=3W^2+W \n" ); document.write( "3W^2+W-80=0 \n" ); document.write( "(3W+16)(W-5)=0 \n" ); document.write( "W-5=0 \n" ); document.write( "W=5 FEET IS THE ANSWER FOR THE WIDTH. \n" ); document.write( "PROOF \n" ); document.write( "80=(3*5+1)5 \n" ); document.write( "80=16*5 \n" ); document.write( "80=80 \n" ); document.write( " |