Tricia made a circular mat from a square piece of cloth as shown in the diagram below. Radius: 9 In terms of pi, what is the circumference, in inches (in.), of the circular mat? A. 18 pi inches.
B. 36 pi inches.
C. 56 pi inches.
D. 9 pi inches.

Abag of jelly beans contain 13 pink, green, 20 yellow, 10 black, 7 red, and 11 orange jelly beans. approximately what percent of the jelly beans are pink and yellow?

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

Out of 50 students surveyed, 16 have a dog. based on these results, predict how many of the 280 students in the school have a dog.