The length of a rectangle is twice its width. If the perimeter of the rectangle is 60in , find its length and width.

What signals you that factoring by grouping is the best method to use when factoring a problem?

Two streets intersect at a 30- degree angle. at the intersection, the are four crosswalks formed that are the same length. what type of quadrilateral is formed by the crosswalks?

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9