Which of the following is always true of the vertical angles formed by

perpendicular lines? Check all that apply.

A. They are congruent.

B. They are right angles.

C. They are acute.

D. They are obtuse.

Ruben bought 6 new books for his collection. This increased his collection by 12%. How many books did he have before his purchases.

What is the solution set of - |-x| = - 12? A. no solution B. {-12} C. {12} D. {-12, 12}

What is W in this equation, - 12u+13=8w-3

a college has a student to teacher ratio of 30 to 2. if there are 180 teachers at the college, how many studentd attend the college?

There are 1,000 workers in a a factory. Each worker works 30 hours a week and is paid $10.50 an hour, How much does the company pay the workers altogether each week?

The total surface area of a cube is 114 in.² what is the length of each side of the cube? It is __ in

Simplify the expression exactly. (18) (72) The #'s in () are in that house thing A. 6 B. (90) C. 36 D. 1296

At the bus station buses begin their route at 6am bus A has a long route and leaves the station every 75 minutes bus B has a short route and leaves the station every 15 minutes what is the next time bus A and bus B will leave the bus station at the

Solve (t-5) = 2 where t is a real number. Simplify your answer as much as possible.

What is the width of a rectangle with an area of 5/8in2 and a length of 10inches