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3 votes
Alegbra- How can I solve #5?

Alegbra- How can I solve #5?-example-1
User Mrkhrts
by
8.5k points

1 Answer

6 votes

Answer:

3

9

21

Explanation:

For the first one use the law of total probability

B=A∩B+A'∩B

12=9+A∩B

A∩B= 3

For this one you should use demorgans law and the union formula

(A'∩B')=(AUB)'

AUB= A+B-A∩B

6+12-3=15

15'= 24-15 = 9

For this one use demorgans law again

(A'UB')=(A∩B)'

(A∩B)'= 24-A∩B= 24-3= 21

User Ksbg
by
8.5k points

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