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dimulka [17.4K]
3 years ago
9

What is the equation of a circle with a center (-8,3) and radius 8?

Mathematics
1 answer:
Morgarella [4.7K]3 years ago
4 0

Answer:

(x + 8)² + (y - 3)² = 64

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

here (h, k) = (- 8, 3) and r = 8, hence

(x - (- 8))² + (y - 3)² = 8²

(x + 8)² + (y - 3)² = 64 ← equation of circle


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Step-by-step explanation:

5 students in choir <=> 1 student in band

If there are 47 students in band =>

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4 0
2 years ago
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Rationalize the denominator of square root of negative 49 over open parentheses 7 minus 2 i close parentheses minus open parenth
navik [9.2K]

The answer is the option d, which is: d) \frac{-77+21i}{130}

The explanation for this problem is shown below:

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2. Multiply the denominator and the numerator by the conjugated (3+11i) and simplify the expression, as following:

\frac{7i(3+11i)}{(3-11i)(3+11i)} \\ \frac{21i+77i^{2}}{121+9}  \\ \frac{-77+21i}{130}

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3 0
3 years ago
Can x=9.4 be written in y=mx+b form?
Westkost [7]

Answer:

The given equation cannot be written in slope intercept form

Step-by-step explanation:

we know that

y=mx+b

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where

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In this problem we have

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This is a vertical line (parallel to the y-axis)

The slope is undefined

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Step-by-step explanation:

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