A bridge is being built across a lake. A survey stake is placed in the ground at one edge of the lake. From the survey stake the surveyor proceeds at a bearing of 90 degrees for 250 m and places a second survey stake. The surveyor the continued at a bearing of 210 degrees for another 170m to the other and placed a third surveying stake at the other edge of the lake. Find the length of the bridge.

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

Find the zeros of each function. f(x) = x^2 + 5x - 6

Graph the equationy= x+3[tex]y = x + 3[/tex]