Whats the answer to 9-x>10

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.

Use sigma notation to represent the following series for 9 terms.

Why is partitioning a directed line segment into a ratio of 1: 3 not the same as finding the length of the directed line segment?