3 years ago

What is the center of the circle with the equation x2 + y2 – 10x – 11 = 0 ?

1 answer:

4 0

Rearrange to standard form:-

x^2 - 10x + y^2 = 11
(x - 5)^2 - 25 + y^2 = 11
(x - 5)^2 + y^2 = 36

Center of circle = (5, 0) and radius = sqrt36 = 6

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8-y
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3 years ago

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How do I solve this problem?

Brrunno [24]

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4 years ago

What is the equation of the coordinate A and B if they are (4,7), (6,3) respectively. What is the equation of the straight line.

Nesterboy [21]

Answer: y+2x=15

Step-by-step explanation:

Given

Two points A and B are (4,7) and (6,3) respectively

Using two-point form

$\Rightarrow \dfrac{y-y_1}{x-x_1}=\dfrac{y_2-y_1}{x_2-x_1}$

Putting values

$\Rightarrow \dfrac{y-7}{x-4}=\dfrac{3-7}{6-4}\\\\\Rightarrow \dfrac{y-7}{x-4}=\dfrac{-4}{2}=-2\\\\\Rightarrow y-7=-2x+8\\\\\Rightarrow y+2x=15$

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3 years ago

Whats the answer to this has me stumped

Thepotemich [5.8K]

Ànswer is A
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7 0

3 years ago

HELP HELP HELP!!!!!!!

erma4kov [3.2K]

Answer:

b = 77

Step-by-step explanation:

a² + b² = c²

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b² = 7225 - 1296

b² = 5929

$\sqrt{b^2} =\sqrt{5929}$

b = 77

3 0

3 years ago