How do you know immediately that 2,056 in not a prime number

In the diagram below? p is circumscribed about quadrilateral abcd. what is the value of x

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

Find two numbers if their sum is 91 and the ratio is 6: 7?