3,9,7,21,19,57.55,165 what is the last number?

12. A triangle has side lengths as follows: 2x - 3, 8x + 1 and 5x - 8. Find an expression to find the perimeter of the triangle and solve for x, to find each side length. If the Perimeter is equal to 215 inches.

Prime factorization of the number 2535

Newton uses a credit card with a 18.6% APR, compounded monthly, to pay for a cruise totaling $1,920.96. He can pay $720 per month on the card. What will the total cost of this purchase be?

Calculate the 5 unit moving average for the function f (x) = x^ (2/3) + x

A card is dealt from a 52-card deck. find the probability that it is not a 77. express the probability as a simplified fraction

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