Pump a can unload a pump in 30hours and pump b can unload in 24 hours because of an approaching storm, both pumps were used. How long did it take to empty the ship?

Solve for t. h (t) = - 16t^2 + 150t + 70

Divide -2 1/2 : 6 -2 1/6 -5 1/2 5 1/2 2 1/6

Find all complex solutions of 3x^2+6x+1=0. (If there is more than one solution, separate them with commas.)

Suppose you had x dollars in your bank account. You spent $22 but have at least $28 left. How much money did you have initially? Write and solve an inequality that represents this situation.

A certain rare form of cancer occurs in 37 children in a million, so its probability is 0.000037. In the city of Normalville there are 74,090 children.

8^2 - 4 (-3) (-2) / 8-8^2 : 4

Is 70+12 an expression or an equation

Simplify 2 · 5^2. A. 49 B. 20 C. 100 D. 50

Jill, meg and Beth are sisters. Jill is 2 yrs younger than meg. Beth is half as old as meg. let m represent megs age. Write two other algebraic expressions based on this situation.

Solve the right triangle. 51.50