document.write( "Question 57831: 14. The length of a rectangle is 9 in. more than twice its width. If the perimeter of the rectangle is 30 in., find the width of the rectangle.
\n" );
document.write( "A) 1 in.
\n" );
document.write( "B) 2 in.
\n" );
document.write( "C) 3 in.
\n" );
document.write( "D) 4 in.
\n" );
document.write( "Thankyou for your time!!! \n" );
document.write( "
Algebra.Com's Answer #39511 by hayek(51)![]() ![]() ![]() You can put this solution on YOUR website! If l=length and w=width, we have two unknowns. We need two equations to solve for two unknowns.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The problem gives us both equations: \n" ); document.write( "\"The length of a rectangle is 9 in. more than twice its width\" ==> \n" ); document.write( "\"perimeter of the rectangle is 30 in\" ==> \n" ); document.write( "\n" ); document.write( "Plug the first equation into the second: \n" ); document.write( " \n" ); document.write( "Distribute: \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |