30 points don't delete for ed2020
What is the surface area of the rectangular pyramid below?

A rectangular pyramid. The rectangular base has a length of 18 feet and a width of 10 feet. 2 triangular sides have a base of 18 feet and a height of 14.1 feet. 2 triangular sides have a base of 10 feet and a height of 16 feet.
386.9 ft2
593.8 ft2
639.4 ft2
1,053.2 ft2

Which statement about the relative areas of δabc and δxyz is true? the area of δabc > the area of δxyz the area of δabc < the area of δxyz the area of δabc = the area of δxyz more information is needed to compare.

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers

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