Convert (4(cos(7pi/9) + isin(7pi/9)))^3 to standard form

Find the quotient. 50a2 – 98b2 -5a +7b

Which expression is equivalent to the expression shown?

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