There are 9 balls in a bag. 6 are blue, 3 are red. jenny pulls two balls out without replacement. a) what is the probability of picking exactly one blue ball?
b) what is the probability of picking at least one blue ball?​

Solve the system of equations y= 3/2 - 1, -x+ y =-3

The art class is planning to paint a mural on an outside wall. this figure is a scale drawing of the wall. width: 11 in length: 28 in unit rate: 1.5 ft per in. write the ratio of the area of the drawing to the area of the actual mural. write your answer as a unit rate. show that this unit rate is equal to the square of the unit rate 1.5 ft per in

Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655