document.write( "Question 155515: the length of a rectangle is twice the width. the perimeter is 48 in. find the dimensions of the rectangle. \n" ); document.write( "
Algebra.Com's Answer #114543 by Adam(64)\"\" \"About 
You can put this solution on YOUR website!
We have two sides a and b (length,width) but because b is just twice the a, we can express length of both sides using only one variable: a, 2a
\n" ); document.write( "after plugging in all the variables you should be left with quadratic equation in one variable.
\n" ); document.write( "Cheers,
\n" ); document.write( "Adam
\n" ); document.write( "p.s. If you don't know which equation should you plug into, think about one which contains both sides of rectangle and it's perimeter...
\n" ); document.write( "
\n" );