Given the vectors u=6i-4j and v=-i+2j, find -2u and u+v Write your answers in the form ai +bj

Given abcd ac=38 and ae=3x+4 find the value of x

Write the slope-intercept form of the line that passes through the point (1, 0) and is parallel to x - y = 7. t

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