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vivado [14]
3 years ago
12

What is the equation of a circle whose center is (2,0) and has a radius= 9?

Mathematics
2 answers:
Flauer [41]3 years ago
6 0
The equation of a circle is: (x - h)² + (y - k)² = radius² where (h, k) is the center. Now just plug in your given information and simplify.

(x - 2)² + (y - 0)² = 9²

Your equation is:
(x - 2)² + y² = 81
HACTEHA [7]3 years ago
6 0
(x-2)²+(y-0)²=9²
you need simplify it.
center(a,b) radius=R
(x-a)²+(y-b)²=R²
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Answer:

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Step-by-step explanation:

Each factor of 10 in the divisor causes the decimal point to move 1 place to the left.

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c) The decimal point has moved 4 places to the left, so the divisor is 10^4 = 10,000.

d) The divisor is 10^5, so the decimal point in the quotient if 5 places to the left of where it is in the dividend. Moving the quotient's decimal point 5 places to the right gives ...

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<em>Additional comment</em>

An exponent signifies repeated multiplication. Here, we're concerned with repeatedly multiplying (or dividing) by factors of 10. The exponent indicates the number of factors: 10·10 = 10^2 = 100. It also matches the number of zeros following the 1 in the product. 1000 = 10^3 has 3 zeros after the 1, for example.

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