Solve the system of equations using gaussian elimination or gauss-jordan elimination. 1. 2x+y=1 3x-6y=4 2. 5x-3y=-2 4x+2y=5

Which is equivalent to 10/12? options: 10/18 5/6 3/12 9/11

Eis the midpoint of line segment ac and bd also line segment ed is congruent to ec prove that line segment ae is congruent to line segment be

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