Which of the following properties describes the mathematical expression? 7 + 2 = 2 + 7

A. Associative

B. Distributive

C. Identity

D. Commutative

Which expression is equivalent to the expression below? (6c^2 + 3c) / (-4c + 2) / (2c + 1) / (4c - 1)a. 3c(2c-1) / (2c + 1)b. -3c(2c-1)^2 / (2c + 1)^2c. 3cd. -3c(just took the test its d. -3c)

How do you find the area of a triangle

Select all of the following expressions that are equal to 2.5.