4friends evenly divided up a n-slice pizza. one of the friends, harris, ate 1 slice than he received. how many slices of pizza did harris eat? as an expression

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

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

Kerion has a beaded necklace business. she can make 12 necklaces is 2 hours. how long will it take her to make 9 necklaces?