Answer:
Mean or Median.
Step-by-step explanation:
The mean and the median are both equal to 27.
Therefore the answer is,
mean or median.
Answer:
A. 12
Step-by-step explanation:
-2*-1=2*6=12
plz mark brainliest
Answer:
Prove set equality by showing that for any element , if and only if .
Example:
.
.
.
.
.
Step-by-step explanation:
Proof for for any element :
Assume that . Thus, and .
Since , either or (or both.)
- If , then combined with , .
- Similarly, if , then combined with , .
Thus, either or (or both.)
Therefore, as required.
Proof for :
Assume that . Thus, either or (or both.)
- If , then and . Notice that since the contrapositive of that statement, , is true. Therefore, and thus .
- Otherwise, if , then and . Similarly, implies . Therefore, .
Either way, .
Therefore, implies , as required.
T x -4
-25
The sign in the middle means "more than or equal to" or "at least"