What is the solution to the system of equations below?
5 x + 2y = -3
3x + 6y = 6

Can someone pls ! pls answer all. no explanation needed..

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

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