Whats the probability of selecting a green marble out of a jar with 4 blue, 3 red, and 5 green?

Pls! does anybody know a shortcut for answering these types of questions in the future?

Over the course of a month, a person's weight decreases. what type of relationship is this? a. positive relationship

In a right triangle δabc, the length of leg ac = 5 ft and the hypotenuse ab = 13 ft. find: b the length of the angle bisector of angle ∠a.