Acute triangles are similar. always sometimes never

The trigonometric ratios sine and secant are reciprocals of each other

Which is the solution to the inequality? 2 3/52 1/15 b< 3 2/15 b> 3 2/15

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.