Name a 2 digit number that is a odd that is prime

Given the following definitions: U = {1, 2, 3, 4, 5, 6, 7} A = {1, 2, 4, 5} B = {1, 3, 5, 7} How many elements are in A' ∪ B?

The radius of a cylinder is increased from 9 to 9.03 inches. if the height remains constrant at 12 inches. Estimate the change in volume

Sun Valley and San Jose are 105 km from each other. How far apart would the cities be on a map that has a scale of 1 cm : 15 km?

Y^2-18y+81 quadratic equation/formula

if three pipes are all opened, they can fill an empty swimming pool in 3 hours. THe largest pipe alone takes one third the time that the smallest pipe takes and half the time the other pipe takes.