after you make an observation you make a hypothesis......
Answer:
D
Step-by-step explanation:
Moving it 3 units would add 3 then reflection makes the addition negative
P(a ∪ b) = p(a) + p(b) - p(a ∩ b)
p(a ∩ b) = p(a) + p(b) - p(a ∪ b)
p(a ∩ b) = 1/3 + 2/5 - 3/5
p(a ∩ b) = 2/15
Answer:
Commutative.
Associative property works on symbols instead of signs!