Answer with Step-by-step explanation:
We are given that A, B and C are subsets of universal set U.
We have to prove that

Proof:
Let x
Then
and 
When
then
but 
Therefore,
but 
Hence, it is true.
Conversely , Let
but 
Then
and
When
then 
Therefor,
Hence, the statement is true.
Answer:
4.5 x 0.85 = 3.825
Step-by-step explanation:
<em>Hello!</em>
<em>17.45 as a mixed fraction is </em><em>17 9/20</em><em>.</em>
<em>If this is not correct, please comment below and I will try my best to find the right answer.</em>
Answer:
well 126/9=14 but is the other stuff factor families or something? like whats the question asking
Step-by-step explanation:
D
Step-by-step explanation:
you subtract 15 and 11 = 4 then subtract 9-1 is 8 and then you find the common denominator