document.write( "Question 353545: a certain rectangle has an area of 80 square units. its length is one more than three times its width. what are the dimensions of the rectangle? draw a diagram, solve the problem, and write an equation \n" ); document.write( "
Algebra.Com's Answer #252598 by mananth(16946)![]() ![]() You can put this solution on YOUR website! let width be x \n" ); document.write( "length = 3x+1 \n" ); document.write( ".. \n" ); document.write( "x(3x+1)= 80 \n" ); document.write( "3x^2 +x=80 \n" ); document.write( "3x^2+x-80=0 \n" ); document.write( "3x^2+16 x -15x-80=0 \n" ); document.write( "x(3x+16)-5(3x+16)=0 \n" ); document.write( "(3x+16)(x-5)=0 \n" ); document.write( "So x = 5 the width. \n" ); document.write( "length = 3x+1= 16 \n" ); document.write( ".... \n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( " \n" ); document.write( " |