There are 5 students in a class that take the bus, and there are 20 total students in the class. What percentage of students take the bus?

What is the range of the data below? .8090100

If the value of cos330°is√3/2 then find cos 165°.

The length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?