There are 5 blue marbles, 6 red marbles, 4 green marbles and 1 black marble in a bag. You choose a marble, DO NOT REPLACE it, and choose another. Find each probability.

Use the x-intercept method to find all real solutions of the equation. x^3-10x^2+27x-18=0

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297

You buy 4 items that cost 2.69 14.45 8.05 13.95 what is the estimated total round to the nearest dollar