1 2/7 / x = 2 1/4. please help very quick

Two lines parallel to the same plane are parallel to eachother

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.

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect