Write an equation that says that the length of the green line is equal to the length of the black line. Combine like terms.

Pam buys a sleeve of ball bearings for her skateboard. each of the bearings is 1 1/5 inches wide. the sleeve is 9 3/5 inches long. how many ball bearings are in the sleeve? show your work.

Prove that quadrilateral is a rhombus.

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?