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adell [148]
3 years ago
12

7) What is the equation of a circle with the center (-8, 9) and the radius of 10?​

Mathematics
1 answer:
lutik1710 [3]3 years ago
6 0

Answer:

<h3>(x+8)² + (y - 9)² = 100</h3>

Step-by-step explanation:​

The general equation of a circle is expressed as;

(x-a)² + (y - b)² = r² where;

(a, b) is the centre of the circle

r is the radius

Given

Centre (-8, 9) where a = -8, b = 9

radius r = 10

Substitute into the formula to get the required equation;

(x-(-8))² + (y - 9)² = 10²

(x+8))² + (y - 9)² = 10²

(x+8)² + (y - 9)² = 100

Hence the required equation is (x+8)² + (y - 9)² = 100

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3 years ago
Need Help On This Problem PLZ :-)
anastassius [24]

Answer:

y = 9 + 19x

Step-by-step explanation:

To find the equation matching a set of data, you simply try a few values for x and see if by solving that side of the equation you get the value of y.  If you do, you found your equation.

You have a big advantage here... since you have the value of y when x = 0.

When x = 0, y = 9, that's a very important data to have to simplify your research.

Let's try the value of 0 for x in each of the given equations:

y = 18 + 10 (0) = 18  --- NO

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y = 9 + 19 (1) = 28 --- YES! Confirmed!

y = 9 + 19x is your answer!

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4 years ago
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Answer:

\frac{1}{6}  \times  \frac{1}{5 }  \\  \frac{1}{30}

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find the equation of the line that is perpendicular to the given line and passes through the given point. CD; (-2,1). C cornet p
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Answer:

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Step-by-step explanation:

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The slope of the perpendicular line is the opposite reciprocal of this: -1/(-2) = 1/2. The point-slope equation of the desired line is ...

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  x -2y = -4 . . . . . . standard form equation of the desired line

5 0
2 years ago
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