margaret1758
05.10.2019 •
Mathematics
The point (4, -2) lies on a circle and the center of the circle is at the point (4, 1).
what is the equation of this circle?
a. (x - 1)2 + (y - 4)2 = 9
b. (x - 1)2 + (y - 4)2 = 3
c. (x + 4)2 + (y + 1)2 = 9
d. (x - 4)2 + (y - 1)2 = 9
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Ответ:
D
Step-by-step explanation:
The equation of the circle is (x-x0)^2 + (y-y0)^2 = r^2, where (x0,y0) is the center of the circle. Radius is the distance from any point to the center. Using distance formula you get r = 3.
Ответ:
G 110
Step-by-step explanation: