A bag contains 30 small balls that are red, green and black. There are 12 red balls and 16 greed balls. What is the probability of pulling out a black ball.

What is the slope of a line that is perpendicular to y = 3x + 1

Michelle had a birthday party. she bought a bag of candy with 96 starbursts, 72 hershey's, and 68 reese's. she wants to use all the candy she bought to make goody bags with the same amount of starbursts, hershey's and reese's in each bag. what is the largest number of bags she can make?

What is the volume of a cone with a height of 6 cm in the radius of 2 cm