The area of a trapezoid is 1400 cm and the bases measure 20 cm and 50 cm, find the height.

And employees salary increase by $4500 which represents a 15% raise what is the employees new salary

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

The radius of a sphere is 3 inches. which represents the volume of the sphere?