document.write( "Question 77647: The width of a rectangle is 7 ft less than the length. The area of the rectangle is 120 ft2(square). Find the width of the rectangle. \n" ); document.write( "
Algebra.Com's Answer #55696 by prabhjyot(165)\"\" \"About 
You can put this solution on YOUR website!
The width of a rectangle is 7 ft less than the length. The area of the rectangle is 120 ft2(square). Find the width of the rectangle.\r
\n" ); document.write( "\n" ); document.write( "If we let the length = L\r
\n" ); document.write( "\n" ); document.write( "Then, the width, or w, will be L-7\r
\n" ); document.write( "\n" ); document.write( "We know that the area of a rectangle is length times width.\r
\n" ); document.write( "\n" ); document.write( "So, L(L-7)=120\r
\n" ); document.write( "\n" ); document.write( "\"L%5E2-7L=120+\"\r
\n" ); document.write( "\n" ); document.write( "\"L%5E2-7L-120=0+\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "(L-15)(L+8) \r
\n" ); document.write( "\n" ); document.write( "So, L=15,-8 length can't be negative, so L=15
\n" ); document.write( "So width w=L-7=15-7=8
\n" ); document.write( "So width of the rectangle is 8 ft.
\n" ); document.write( "
\n" ); document.write( "
\n" );