The planet mars could be a future destination for the u. s. space program. assume that mars is a perfect sphere. its surface area is about 145 million square kilometers. what is the radius of mars at its equator? round to the hundreds place.
||| answer choices:
a) 4,500 km
b) 2,200 km
c) 5,000 km
d) 3,400 km |||

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.