Answer with Step-by-step explanation:
We have to prove that
is true for all sets A and B
Let 
Then 
or 
and 
or 
Hence,
Conversely ,Let
Then x belongs to A and x does not belongs to B then
x belongs to A- B
Or x belongs to A and x belongs to B then x belongs to 
Hence, 
Therefore,
Nia answered correct answers = 80% of the 40 questions
When we remove % sign from a number, we divide that number by 100
= 
of 40
=
Cancelling the two zeroes from numerator and denominator,
= 
= 32.
Total correct answers answered by Nia = 32
I they each cost 6.21$ caz if u do 6.21 you get 74.53 but if you do 6.20 you get74.40 what ever u prefer
Answer:
x ≤5
Step-by-step explanation:
There is a closed circle at 5 so that means equals
The line goes to the left so that means less than
x ≤5
