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Anastasy [175]
3 years ago
15

Will mark brainlist if correct and it’s due soon so please help. Use the information provided to write the standard form equatio

n of each circle

Mathematics
1 answer:
Arturiano [62]3 years ago
4 0

Answer:

D

Step-by-step explanation:

Standard equation of the circle is at the origin x^{2} +y^{2} = r^{2} But this is only when the center of the circle is at (0,0). In the quesiton stated the center is (-1/2, √57) .

When the center isn't (0,0) the equation is (x-h)^{2} +(y-k)^{2} =r^{2} (h,k) is center and r is radius.

So inputting the center (-1/2, √57) and radius = in the equation:

(x- -\frac{1}{2} )^{2} + (y-\sqrt{57} )^{2} = 9^{2}

(x+\frac{1}{2})^{2}  + (y-\sqrt{57} )^{2} = 81

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