juan sees a maple tree and a pine tree in the forest. He knows the pine tree is 20.68 feet tall. On a sunny day, the shadow of the pine tree is 4.2 feet long while the maple's shadow is 20.02 feet long. Estemate the height of the maple's tree

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