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Zinaida [17]
3 years ago
11

What is the equation of a circle centered at the origin with radius 15?

Mathematics
1 answer:
sashaice [31]3 years ago
6 0

Answer:

D

Step-by-step explanation:

The equation of a circle centred at the origin is

x² + y² = r² ( where r is the radius )

Here r = 15, thus

x² + y² = 15² , that is

x² + y² = 225 → D

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Answer:

b. slope: -5; y-intercept: 7

Step-by-step explanation:

We are given the equation:

y + 5x = 7

To find the slope and y-intercept of the line, it would be helpful to get the equation into slope-intercept form. The slope-intercept form of a line is:

y = mx + b

where m is the slope and b is the y-intercept.

Lets get the given equation into slope-intercept form.

y + 5x = 7

Subtract 5x from both sides.

y = -5x + 7

Now we have the equation in slope-intercept form. By looking at the equation, we can see that the slope is -5 and that the y-intercept is 7.

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I hope you find my answer and explanation to be helpful. Happy studying.

3 0
3 years ago
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disa [49]

Answer:

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Step-by-step explanation:

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Hence

Sum of interior angles= 180°(6-2)

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