11/20 A box contains 5 red marbles, 6 white marbles, and 4 blue marbles. Find
P(red or blue)

3/5

Step-by-step explanation:

Probability is the number of favorable outcomes divided by the total number of outcomes. In this case, there are 5+4+6, or 15, possible outcomes, because there is one selection from 15 marbles. Therefore, the probability of choosing a blue marble is 4/15, and the probability of choosing a red marble is 5/15. Add these together to get the probability of choosing a red or blue marble:

(4/15)+(5/15)=9/15

9/15 simplifies to 3/5.

1/4 because there is 4 grades.

answer:

125 yards

explanation:

75+50=125. that is my answer