I got this.... but this is not an option.<span>1.71428571429</span>
For this question you really have to see how much information you can get out of just knowing the endpoints of the diameter.
The y value is the same for both endpoints of the diameter so we know that the given diameter is a horizontal line that is 8 units long because 4 - (-4) = 8, and the radius is 4.
We also know that the center of the circle is the midpoint of the endpoints of the diameter. Halfway between -5 and -5 is -5 so the y value of the midpoint is -5. halfway between -4 and 4 is 0 so the x value of the midpoint must be 0. Thus the center of the circle is (0,-5)
Equation of a circle:

(h,k) is the center of the circle and r is the radius. If you plug in the values of each of these variables, you get the equation of the circle:
Answer:
k my answer keeps getting deleted
Step-by-step explanation:
5 , 8
Answer:
0.6069
Step-by-step explanation:
Given an approximately normal distribution:
Z = (x - mean) / standard deviation
Mean = 69.3 ; Standard deviation = 2.58
For :
P(x < 70)
Z = (70 - 69.3) / 2.58
Z = 0.7 / 2.58
Z = 0.2713
P(Z < 0.2713) = 0.6069