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adell [148]
3 years ago
10

I’m really struggling would really appreciate if someone could help!!!!!

Mathematics
1 answer:
ladessa [460]3 years ago
7 0

9514 1404 393

Answer:

  A)  29/40

Step-by-step explanation:

The formula for this is ...

  P(A or B) = P(A) + P(B) - P(A and B)

Filling in the given values, you have ...

  P(A or B) = 9/20 +1/2 - 9/40

  P(A or B) = 18/40 +20/40 -9/40 = (18+20-9)/40

  P(A or B) = 29/40 . . . . matches choice A

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