Question

Melissa has a bag that contains 6 red marbles, 8 yellow marbles, and 18 blue marbles. if she chooses one marble from the bag, what is the probability that the marble is not blue?

Answer 1

`(7)/(16)`

Explanation:

This answer was from my quiz and I hope you don't need any further info if you do just let me know and I'll edit my answer.

Note to moderators:

Please don't delete this answer because I just want to help others while I can.

Answer 2

the probability that the marble she chooses is not blue can be solve in two ways.
first way: is to solve the probability of red and yellow marbles, so that is the probability of not getting blue
P = 6 + 8 / 6 + 8 + 18P = 7/16
2nd way: is to solve the null of blue or 1 minus the probabilty of choosing blue marble
P = 1 - (18 / 6 + 8 + 18)P = 1 - ( 9 / 16)P = 7/16