Tìm x, y, z biết x(x+y+z )=-5; y(x+y+z )=9;7(x+y+z )=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

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4

The surface area of the triangular prism is .