Which expression is not equivalent to the opposite of +9?
A.-9
B. -|9|
C. -|-9|
D. |-9|

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

Which graph represents the function f(x)=4[x]?

What is the volume of a cardboard box that measures 1 inch by 5 inches by 7 inches? the volume of the cardboard is cubic inches. enter your answer as the number that correctly fills in the blank in the previous sentence. if necessary, round your answer to the nearest tenth, like this: 42.5