There are 4 blue marbles, 5 red marbles, I green marble, and 2 black marbles in a bag. Suppose you select one marble at random, find each probability:
Sample Space - 12 marbles
P (black marble)
P (blue marble)
P (blue or black marble)
P (not green marble)
P (not purple marble)

3x + 4y = 5 x- 3y = -7 solve by substitution

Which statements about the system are true? check all that apply. y =1/3 x – 4 3y – x = –7 the system has one solution. the system consists of parallel lines. both lines have the same slope. both lines have the same y–intercept. the equations represent the same line. the lines intersect.

Oliver had $50 on the day before his birthday. after he recived some money for his birthday , he had $75. write and solve eqaution to find how much money oliver received for his birthday. x+50=75