Eddie bought 4 pieces of salmon weighing a total of 2 killograms. one piece weighed 4/10 kg and two pieces weighed 5/10 kg each. what was the weight of the fourth piece of salmon?

Which matrix can be multiplied to the left of a vector matrix to get a new vector matrix ?

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

Answer asap evaluate 4-0.25g+0.5h4−0.25g+0.5h when g=10g=10 and h=5h=5.