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3 years ago

7

A circle has the equation x^2−8y−6x+y^2=4.

1 answer:

mylen [45]3 years ago

8 0

Hello here is a solution :
x²-8y-6x+y²=4....(1)
A)
x²-6x = x²-2(3)x+9-9
= x²-2(3)x+3²-9
x²-6x =(x-3)² -9
B)
y²-8y = y²-2(4)y +4²-16
y²-8y = (y-4)²-16
C)
in (1) :

(x-3)² -9 +(y-4)²-16 = 4
(x-3)² +(y-4)² = 29 ...<span>is the standard form of the equation

</span> <span>Select answer 1 :
</span><span>A: 3
B: 4
C: (x−3)2+(y−4)2=29</span>

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The angle of elevation to the top of a water tower from point A on the ground is 19.9°. From point B, 50.0 feet closer to the to

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Answer in terms of a trigonometric function :

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Answer in figures

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Step-by-step explanation:

Consider the sketch attached below to better understand the problem.

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From equation 2,

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substituting the value of x into equation 1, we get

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Answer:

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