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timofeeve [1]
3 years ago
10

What is the equation of the circle whose center and radius are given.

Mathematics
2 answers:
muminat3 years ago
5 0
Hello!

The equation for a circle is

(x - h)^{2}  + ( y - k)^{2} =  r^{2}

(h,k) is the center
r is the radius

Put in the values you know

(x - 7)^{2} + ( y + 3)^{2} = 7^{2}

Simplify

(x - 7)^{2} + ( y + 3)^{2} = 49

The equation is (x - 7)^{2} + ( y + 3)^{2} = 49

Hope this helps!
bazaltina [42]3 years ago
5 0
Use the equation of a circle: (x – h)² + (y – k)² = r².

Plug in the numbers; center is (h, k) and radius is r.

(x - 7)² + (y - -3) = 7²
Simplify to:
(x - 7)² + (y + 3) = 49
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B

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Step-by-step explanation:

The best way to solve this is by crossing out the data you don't need so you're left looking at the key pieces to put the equation together. If his dad paid him $45.76 for 6.4 hours, then all you need to do is divide 45.76 by 6.4. (Hint: Use a calculator, it makes it ten times faster than trying to write it out!)

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