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givi [52]
3 years ago
11

Can you guys please help me? I understand everything but the last step.​

Mathematics
1 answer:
MariettaO [177]3 years ago
8 0

Answer:

It is because you have to get rid of the power of 2 from c. In order to get rid, you have to square root it on both sides :

c² = 74

√(c²) = √74

c^(1/2×2) = √74

c = √74

Using Indices formula, (a^m)^n = a^(mn)

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Circle R has equation
Rudiy27

Answer:

The center is (-10,10)  and the radius is 4sqrt(3)

Step-by-step explanation:

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We can write the equation of a circle as

(x -h)^2 + (y - k)^2 = r^2  where (h,k) is the center and r is the radius

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(x-  -10)^2 + (y - 10)^2 = (4sqrt(3)) ^2

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