Why would a system of measurement using base 60 instead of base 10 have been used in ancient systems of measurement? a. it can be divided by many numbers c. base 60 is different for everyone b. it is based on having twelve digits (fingers and arms) d. base 60 was sacred

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

Select all the statements that apply to this figure

Find the dimensions of the circle. area = 64π in.² r= in.