From a hot-air balloon, Andres measures a 31 ∘
∘
angle of depression to a landmark that’s 847 feet away, measuring horizontally. What’s the balloon’s vertical distance above the ground? Round your answer to the nearest hundredth of a foot if necessary.

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

An elevator travels 310 feet in 10 seconds. at that speed, how far can't his elevator travel in 12 seconds?

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy. how much will she pay after the discount