31 7/8 - 2/7 = what

please i really need the answers for my school

Xto the second power plus 14x plus 48. what are the factors? we are doing factoring trinomials with a=1

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list

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