A marble bag contains 4 gray marbles, 6 red marbles, and 5 black marbles. What is the probability of randomly drawing a red marble and then a gray marble if the first marble is NOT replaced?

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.

The probability that a tutor will see 0, 1, 2, 3, or 4 students is given below determine the probability distribution's missing value.

Solve for x where 0 equation: cot^2x+2cotx+1=0