Pairs of markings a set distance apart are made on highways so that police can detect drivers exceeding the speed limit. over a fixed? distance, the speed r varies inversely with the time t. in one particular pair of? markings, r is 66 mph when t is 66 seconds. find the speed of a car that travels the given distance in 55 seconds.

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.