Use the change of base rule to find the logarithm to four decimal places. log7 0.517

Options:
1) -2.9496
2) -0.3390
3) 13.5397
4) -0.2865

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

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

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x