Triangle ABC has vertices at A(-2, 3), B(-3, -6), and C(2,
-1). Is triangle ABC a right triangle? If so, which angle is
the right angle?
6
5
4
A(-2,3)
O No, the triangle has no right angles.
O Yes, the right angle is angle A.
O Yes, the right angle is angle B.
O Yes, the right angle is angle C
&
-6 -5 4 -3 -2 -1,
6
1 2 3 4 5
C (2-1)
-2
3
-5
B-3-6)

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