pre calculus
posted by king chris .
A bag contains 4 blue marbles, 2 black marbles, and 3 red marbles. If a marble is randomly drawn from the bag, what is probability that it is not black?
1/2
2/9
5/9
7/9
14/19

pre calculus 
Steve
since 2 of the 9 marbles are black,
p(~black) = 1p(black) = 12/9 = 7/9
Respond to this Question
Similar Questions

math
A bag contains red, blue, and orange marbles. If the probability of randomly selecting a red marble is 0.4 and the probability of selecting a red or blue marble is 0.9 what is the probability of selecting a red or orange marble? 
prealgebra
a bag contains 6 red marbles, 5 yellow marbles, 7 blue marbles, and 4 white marbles. if one marble is drawn at random from the bag, what is the probability that it will be white? 
algebra 2
The bag contains three red marbles, two blue marbles, and seven yellow marbles. Two marbles are randomly drawn from the bag. What is the probability of drawing a blue marble, replacing it, and then drawing a blue marble? 
prealgebra
a bag contains 5 green marbles 2 white marbles 8 blue marbles 9 red marbles and 6 black marbles what is the probability of drawing a white marble replacing it and then drawing a green marble? 
Math
One bag contains 5 red marbles, 4 blue marbles, and 3 yellow marbles, and a second bag contains 4 red marbles, 6 blue marbles, and 5 yellow marbles. If Lydia randomly draws one marble from each bag, what is the probability that they … 
algebra 1
The bag contains three red marbles, two blue marbles, and seven yellow marbles. Two marbles are randomly drawn from the bag. What is the probability of drawing a blue marble, replacing it, and then drawing a yellow marble 
math
A bag contains 3 red marbles, 3 blue marbles and 3 yellow marbles. Which of the following methods of selecting 2 marbles will have the greater probability of choosing 2 red marbles? 
maths
a bag contains 10 marbles of which 2 are red and 8 are black.Bag B contains 12 marbles of which 4 are ed and 8 are black.A ball is drawn at random from each bag. 5.1 draw a probability tree diagram to show possible outcome 
Math HELP!!!!!
A bag contains 4 red marbles, 3 blue marbles, and 7 green marbles. If a marble is randomly selected from the bag, what is the probability that it is blue? 
MathAlgebra 1
You have a bag which contains only red and green marbles. In this bag with x^2+5 marbles total, x+1 are red. Also, x3 marbles have a scratch on them. The probability of drawing a red marble from the original bag is equal to that of …