Answer:
1/9
Step-by-step explanation:
the probability of one blue marble is 1/3 so to find the probability of 2 marbles you multiply it by itself.
3z + 5 = 4z - 8
⇌ 5 + 8 = 4z - 3z
⇌ 13 = z
5-12x=29
-12x=29-5
-12x=24
x=-2
6r + 7 = 13 + 7r
subtract 6r from both sides...
7 = 13 + r
subtract 13 from both sides...
-6 = r
r = -6