Answer: 1
Step-by-step explanation:
5+13/18
18/18
1
Using the mid-point concept, it is found that point B is located at coordinates (-6.5, 0).
<h3>What is the midpoint concept?</h3>
The midpoint between two points is the halfway point between them, and is found using the mean of the coordinates.
The center is the midpoint of the two coordinates of the diameter, hence:

For the x-coordinate:

x + 0.5 = -6
x = -6.5
For the y-coordinate:

y + 6 = 6
y = 0
More can be learned about the mid-point concept at brainly.com/question/10956693
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Well first you need to show the rest of the problems before i can truely help you sorry.
Answer:
first one with -1...21
Step-by-step explanation:
only one that follows quadratic formula format