There are 8 girls and 8 boys on the student senate. three of the students are seniors. what is the probability that a person selected from the senate is not a senior? also would this be a mutually exclusive or inclusive event? : also show the steps. : )

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0

If x varies directly as y, and x = 7.5 when y = 10, find x when y = 4