a bag has 5 red marbles, 6 blue marbles and 4 black marbles. what is the probability of a blue marble, replacing it, and then picking a black marble? 8/754/451/9

There are 15 total marbles in the bag, of which 6 are blue nd 4 are black.

The probability of pulling a blue marble from the full bag is  6/15 .

The probability of pulling a black marble from the full bag is  4/15 .

The probability of both events happening is

             (6/15) x (4/15)  =  24/225 = 8/75

Ok jnibinubu y y y buy un u ibubibibu

7.3

step-by-step explanation:

81+30=111180 minus 111=691/2×19=9.569÷9.5=7.263157895~7.3