Suppose a jar contains 19 red marbles and 11 blue marbles. If you reach in the jar and pull out 2 marbles at random at the same time, find the probability that both are red? ​

List the 10 possible samples (without replacement) of size 3 3 that can be obtained from the population of five officials.

Ben wants to play a carnival game that costs $2. in his pocket he has 5 red tickets worth 35 cents each, and 15 blue tickets worth 10 cents each. which of the following systems of inequalities correctly represents the constraints on the variables in this problem? let represent the red tickets and b represent the blue tickets.

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )