A monoment is made in the form of a right pyramid with a regular hexagon as a base. Each base side is 5 meters and the slant height is 30 meters. If only the sides and not the base of the monument is to be covered by metals how many square meters of metal are needed to cover the sides of the pyramid ?

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

Ateacher wanted to buy a chair, a bookshelf, two tables and a desk. she spent $900 for all five items and the chair and the desk combined 70% of her total. if the bookshelf cost $50, how much did each of the tables cost?

Is experimental probibilty the same as the observed frequency in math? i need the answer asap!