Answer:
C
Step-by-step explanation:
When completing the square, we essentially want to create a perfect square trinomial by adding a constant.
If we have the following expression:

And we want to complete the square, we will need to divide the b-coefficient by half and then square it.
Thus, the added term should be:

In the given equation, we have:

The b term here is 8. Therefore:

The value we would add would be 16.
The answer is C.
Further notes:
To complete the square, add 16 like mentioned earlier. However, we also need to subtract 16 to balance things out:

The expression inside the parentheses is now a perfect square trinomial. Factor it:

And we are done!
Answer: This does not represent an SRS because each group of patients chosen does not have an equally likely chance of being chosen.
Answer:2x - 5cm + 3x +2cm + 2x - 1cm=59cm
2x + 3x + 2x + 2cm + 1cm - 5cm=59cm
7x - 2cm=59cm
7x - 2cm + 2cm=59cm + 2cm
7x=61cm
X=8 5/7cm
Step-by-step explanation:
The number = y
2y + 1/3 = 2/3 - 3y
(add 3y to both sides)
5y + 1/3 = 2/3
(subtract 1/3 from both sides to isolate y)
5y = 1/3
(divide by 5)
y = 1/15
Rational Number, Real Number