Which equation shows that 8 is a factor of 32

In a school 2/3 of the students study a language of those who study a language 2/5 study french

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

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