Working together, two pumps can drain a certain pool in

6

hours. If it takes the older pump

14

hours to drain the pool by itself, how long will it take the newer pump to drain the pool on its own?

SAT scores were originally scales so that the scores for each section were approximately normally distributed with a mean of 500 and a standard deviation of 100. What would be the z-score corresponding to a student who gets a section score of 680? a.

What algebraic property is demonstrated in the equation below? 5 + 3 (2x - 7) = 5 + 6x - 21

Simplify: - 3 (y 2) 2 - 5 6y

Three numbers added together total 180. The second number is twice the first, and the third is three times the first. Find each number.

Write10:15 pm in 24 hour time

Natalie has a choice of three breads, five choices of meats, and four choices of cheese to make a sandwich. how many different sandwiches can she make?

What is the area of this triangle 12 inches and 3 inches

Write as an expression and simplify: the tripled product of 6a and b^2

What does n equals when 10 = - 8+n divided by 4

What is 1.5 times 2/3 equal?