darkshaders11
24.12.2019 •
Mathematics
What is the equation of the circle that has a diameter with the end points located at (-5,-3) and (-11,-3)
a. (x-8)^2 + (y-3)^2=9
b. (x+5)^2+(y+3)^2=9
c. (x+8)^2+(y+3)^2=9
d. (x+8)^2+(y+3)^2=36
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Ответ:
r = 0.5 * ( 11-5) = 3
and the x coordinate of the center of the circle is ( -11--5) / 2 = -8
so center is at (-8,-3)
as equation of circle is (x -a)^2 + (y - b)^2 = r^2 where (a,b) = center
our circle will have the equation
(x + 8)^2 + (x + 3)^2 = 9
Ответ:
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