Jessica runs 2 1/2 miles In 16 1/4 min. What is Jessica’s average time per mile in min

Which of these numbers of simulations of an event would be most likely to produce results that are closest to those predicted by probability theory? 15, 20, 5, 10

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.  

What is the simplified form of square root of 400 to the 100th power ?