a box contains 8 red marbles, 5 white marbles, and 4 blue marbles . if a marble is ramdomly selected from the box what is the probability that is white

Airline passengers arrive randomly and independently at the passenger-screening facility at a major international airport. the mean arrival rate is 10 passengers per minutes. compute the following probabilities. p(x = 4) p(x > 11)

Find cot x if sin x cot x csc x = √2

Susie wants to take her friend out for lunch. she wants to spend $9.75 each person. how much will she spend in all.