kayleyroof
kayleyroof kayleyroof
  • 01-09-2021
  • Mathematics
contestada

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

Please help I can give brainliest also Thank you class=

Respuesta :

sqdancefan
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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