Determine the union $\boldsymbol { X } \cup \boldsymbol { Y }$ . Express the answer in interval notation.
-$X = \{ x \mid x - 9 \}$ and $Y = \{ x \mid x \leq 16 \}$
A){ }
B) $( 16 , - 9 ]$
C) All real numbers
D) $( - \infty , 16 ] \cup ( - 9 , \infty )$

Question

Determine the union $\boldsymbol { X } \cup \boldsymbol { Y }$ . Express the answer in interval notation.
-$X = \{ x \mid x > - 9 \}$ and $Y = \{ x \mid x \leq 16 \}$
A){  }
B) $( 16 , - 9 ]$
C) All real numbers
D) $( - \infty , 16 ] \cup ( - 9 , \infty )$

Quizplus · Accepted Answer

The set $X$ includes all numbers greater than -9, extending to positive infinity, while $Y$ includes all numbers up to and including 16. The union of these two sets covers all real numbers, as there is no number that is not included in at least one of the sets.

Determine the Union X∪Y\boldsymbol { X } \cup \boldsymbol { Y }X∪Y

Determine the Union $\boldsymbol { X } \cup \boldsymbol { Y }$