A die is rolled twice. What is the probability of getting either a multiple of 3 on the first roll or total of 8 for both rolls.

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expressions 4s +9s represents the total number of items that will be displayed on s shelves. simplify this expression

Which of the following is not a subset of {1,2,3}?

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.