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Given:
Set
A=3,7,9
Set
B=3,4,11
What is
A uu B ?

{7,9}

{3,4,9,11}

{3,4,7,9,11}

{3}

Given: $\newline$ Set $\mathrm{A}=3,7,9$ $\newline$ Set $B=3,4,11$ $\newline$ What is $A \cup B$ ? $\newline$ $\{7,9\}$ $\newline$ $\{3,4,9,11\}$ $\newline$ $\{3,4,7,9,11\}$ $\newline$ $\{3\}$

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Convert between repeating decimals and fractions

Full solution

Q. Given:

\newline

Set

\mathrm{A}=3,7,9

\newline

Set

B=3,4,11

\newline

What is

A \cup B

?

\newline

\{7,9\}

\newline

\{3,4,9,11\}

\newline

\{3,4,7,9,11\}

\newline

\{3\}

Identify Elements of Set A: Identify the elements of set A. Set A contains the elements $3$ , $7$ , and $9$ .
Identify Elements of Set B: Identify the elements of set B. Set B contains the elements $3$ , $4$ , and $11$ .
Combine Elements of Sets: Combine the elements of sets $A$ and $B$ to form the union. $\newline$ The union of two sets includes all the distinct elements from both sets. Therefore, we combine the elements without repeating any. $\newline$ $A \cup B = \{3, 7, 9\} \cup \{3, 4, 11\} = \{3, 7, 9, 4, 11\}$
Arrange Elements in Ascending Order: Arrange the elements of the union in ascending order (optional for clarity). $\newline$ $A \cup B = \{3, 4, 7, 9, 11\}$

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