A cone has a volume of 120 pi cubic feet. If the radius is 3 feet, what is the height of the cone?

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?

If johnny ate 5 cans of sugar, but in the kitchen they only had 3. what did johnny eat? (he found a secret stash btw.)