17. Four identical bags of cement and a
concrete block have a total mass of 98 kg.
The concrete block has a mass of 8 kg.
What is the mass of each bag of cement?

Consider the function y = f(x)=3^x the values of f(1/2) and f(1/4). rounded to the nearest hundredth, are__and__ respectively

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

When a valve is open 281 gallons of water go through it in one hour the number of gallons that would go through in 94 hours is