What are all the multiplication combinations for 18

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

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2 acellus answer