There are 3 red marbles, 5 green marbles, 4 blue marbles, and 7 black marbles. what is the probability that you will choose a marble that is red or green?

Step-by-step explanation:

There are marbles.

There are 3 red marbles and 5 green marbles.

Odds of picking red are

Odds of picking green are

Picking red or green is just adding probabilities.

666666666666666666666

6

6

6

6

6

6

6

66

6

6

6

66

6

66answer:

step-by-step explanation:

7

step-by-step explanation:

i'm assuming you need to figure out how many campers go into each tent.

i got the answer by:

24+4=28

28/4=7