Which of the following statements is always true for all values of a a) -a = a b) |a| = -a c) |a| = a d) ) = a

When turned about its axis of rotation, which shape could have created this three-dimensional object?

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?

You have a square piece of cardboard that measures 14 inches on each side. to build a box, you cut congruent squares out of each corner of the cardboard. use the picture to find the area of the cardboard you were used to build the box