If you are talking about what is in between the two sets of parentheses then the answer would be multiplication hope that helped
Answer:
See below.
Step-by-step explanation:
1)
So we have:

This can be interpreted as:
"There exists a natural number <em>x</em> and an integer <em>y</em> such that x² is equal to y²."
2)
So we want even numbers are in the set of integers.

This is interpreted as:
"The set of even numbers (2n such that n is an integer) is in the set of integers"
20ml = 80ml / 4 = 380/4 = 95 mg
Flow rate: 95 mg / hr
The patient needs one hour
D- opposite of the right angle