Sandy wants to put up a border in her room. One section of the border is 7 1/3 feet long and she needs 3 1/2 sections of the border. Write and solve an equation that will help you figure out how long the border sections are all together. please help!

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 value of x. give reasons to justify your solutions! l, m ∈ kn

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*