3 years ago

What is the measure of angle efg? a. 70 degrees b. 90 degrees c. 100 degrees d. 130 degrees

1 answer:

lana [24]3 years ago

4 0

We need the format to answer the question. what does it look like?

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Margaret [11]

we conclude that the center of the circle is the point (-5, 0).

<h3>How to find the center of the circle equation?</h3>

The equation of a circle with a center (a, b) and a radius R is given by:

$(x - a)^2 + (y - b)^2 = R^2$

Here we are given the equation:

$x^2 + y^2 + 10x - 1 = 0$

Completing squares, we get:

$x^2 + 10x + y^2 = 1$

Now we can add and subtract 25 to get:

$x^2 + 10x + 25 - 25 + y^2 = 1\\\\(x + 5)^2 -25 + y^2 = 1\\\\(x + 5)^2 + (y - 0)^2 = 26$

Comparing that with the general circle equation, we conclude that the center of the circle is the point (-5, 0).

If you want to learn more about circles:

#SPJ1

3 0

2 years ago

nordsb [41]

68×3=204iles in 3 hour 204/3

5 0

3 years ago

Sedaia [141]

The correct answer is 63 i hope this helps out, have a nice day!!!

6 0

3 years ago

Alik [6]

The answer is option B, if this helped mark me the brainiest!!

4 0

3 years ago

vagabundo [1.1K]

The answer is A hope this helps

8 0

3 years ago