your friend knows that a triangle with side lengths 3 4 and 5 is a right triangle. she says that the side lengths 5 6 and 7 must also from a right triangle. describe her error

The table shows the distance traveled over time while traveling at a constant speed.

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

Cole says the distance between points (-5,0) and (0,-5)is 5 units. is he correct? explain why or why not.