Ayard contain 36 inches .21 inches is what fraction of a yard?

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?

The value of cos 30° is the same as which of the following?

Someone answer this asap for the length, in feet, of a rectangular rug is represented by the expression 5x² + 2x. the width, in feet, is represented by the expression 3x². which expression represents the perimeter, in feet, of the rug? a. 8x² + 2x b. 8x² + 4x c. 16x² + 2x d. 16x² + 4x