Two friends wanted to see who could ride faster in less then 3 hours. austin rode 6 miles in 60 minutes not including a break. carol rode 8 miles in 75 minutes. write the ratio in simplest form.

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

Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52

Describe the symmetry of the figure. identify lines of symmetry, if any. find the angle and the order of any rotational symmetry.