What is the measure of angle r?

choices:

a. 68
b. 73
c. 63
d. cannot be determined

Is fgh ~ jkl? if so, identify the similarity postulate or theorem that applies.

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?

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