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Mathematics 8 Online
OpenStudy (anonymous):

Given these sets: A = {3, 4, 5, 6, 7} B = {6, 7, 8, 9} C = {2, 4, 6, 8} List the elements of this set B ∩ (AC)

OpenStudy (swissgirl):

what is throwing me off is the (AC) how would you put that in words?

OpenStudy (anonymous):

Sorry its supposed to be AuC

OpenStudy (anonymous):

So A union C

OpenStudy (swissgirl):

\( B \cap (A \cup B) \)

OpenStudy (anonymous):

Yes like that but that second B is supposed to be a C

OpenStudy (swissgirl):

So \( A \cup C =2,3,4,5,6,7,8 \)

OpenStudy (swissgirl):

SH* I keep on messing up lol

OpenStudy (swissgirl):

Ok what elements are both in B and \( A \cup C \)?

OpenStudy (anonymous):

6,7,8

OpenStudy (anonymous):

\[(AUC)={2,3,4,6,8,4,5,6,7}\]

OpenStudy (swissgirl):

yup

OpenStudy (anonymous):

find B intersection (A union C)

OpenStudy (anonymous):

{6,7,8} only

OpenStudy (swissgirl):

Tadum you have your answer lol

OpenStudy (anonymous):

does that ans. your question

OpenStudy (anonymous):

So write it as {6, 7, 8} ?

OpenStudy (swissgirl):

yup

OpenStudy (anonymous):

Thank you!

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