kayleyroof kayleyroof

01-09-2021
Mathematics

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Please help! I can give brainliest also! Thank you!

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Respuesta :

sqdancefan sqdancefan

01-09-2021

9514 1404 393

Answer:

a) n(A∪B) = 20

b) n(A) = 31

Step-by-step explanation:

The relevant formula is ...

n(A∪B) = n(A) +n(B) -n(A∩B)

__

a) n(A∪B) = 5 +18 -3 = 20

b) 32 = n(A) +14 -13 ⇒ n(A) = 31

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