The diagram shows a track composed of a rectangle with a semicircle on
each end. The area of the rectangle is 3,600 square meters. What is the
perimeter of the track? Use 3.14 for 1.
The perimeter of the track is
(Round to the nearest tenth as needed.)

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

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