On his first three tests, Justin scored 99, 93, and 86. What score must he get on his fourth test to have an average (mean) of

80 for all four tests?

All integers are rational numbers is it true or false

Mrs sails era drove at a constant rate for 0.75 hour. She drove 48 miles during that time what was Mrs sliders' constant rate of change

If someone flips switches on the selection in a completely random fashion, what is the probability that the system selected contains at least one sony component? exactly one sony component? (round your answer to three decimal places.

If f (x) = 2x2 5x, find f (3b).

How do you solve x^2-10x=-24 in the form of quadratics?

A test consists of 30 problems and students are told to answer any 10 of these questions. In how many different ways can they choose the 10 questions?

3x2 + 14x - 49 = 0 solving the equation by factoring

How many times heavier is a 16 1/2 pound rockthen a 10 1/2 pound rock

Ben has a marble collection. three fifths of the marbles are solid colored marbles. one fifth of the marbles are cats eyes. what fraction of the marbles are either solid colored or cats eyes

Express the solution set of the equation in set notation. x - 2 = 10