Standing on one bank of a river, an explorer measures the angle to the top of a tree on the opposite bank to be 27 degrees. He backs up 50 feet and measures the angle to the top of the tree to now be 22 degrees. How wide is the river? Round to the nearest tenth of a foot.
187.3 feet
18.7 feet
20.2 feet
191.5 feet

If a baby uses 15 diapers in 2 days, how many diapers will the baby use in a year?

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

What is the approximate value of  x  in the equation below.–3.396–0.7080.3040.955