What’s would be the variable?

Gh bisects fgi. find the measure of hgi •15° •21° •10° •8°

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

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab