Please help! This is a Algebra 1 question. You had taken four test and earned a 60, 95, 80, and a 75. You want to keep your overall average at an 80. Write and solve the equation you would use to find what you need to score on your fifth test to keep this average.

Use multiples to write two fractions equivalent to 7/9. 14/18, 8/10 6/8, 21/27 10/12, 28/36 14/18, 21/27

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

What is 1/3x5 on anuber line what does it look like on a number line