Alarge bag of marbles contains an equal amount of red, orange, yellow, blue, and green marbles. brody randomly selects 1 marble from the bag. which of the following represents the probability of selecting a red, blue, yellow, or green marble a) 0.8 b) 0.7 c) 0.9 d) 0.6

 The correct option is (A) 0.8.

Step-by-step explanation:  Given that a  large bag of marbles contains an equal amount of red, orange, yellow, blue, and green marbles. Brody randomly selects 1 marble from the bag.

We are to find the probability of selecting a red, blue, yellow or green marble.

Let n be the number of each color of marbles in the bag.

That is, the number of red, orange, yellow, blue, and green marbles, each equals n.

Let S denote the sample space of selecting a marble from the bag and A denote the event of selecting a red, blue, yellow or green marble.

Then, we have

n(S) = n + n + n + n + n = 5n,

n(A) = n + n + n + n = 4n.

Therefore, the probability of event A is given by

Thus the required probability selecting a red, blue, yellow or green marble is 0.8.

Option (A) is CORRECT.

(3x-8) or (3x+8)

step-by-step explanation:

your answer would be 12