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tamaranim1 [39]
3 years ago
7

Find the center and the radius of the circle with the equation: x^2 +2x + y^2-2y-14 =0

Mathematics
2 answers:
maw [93]3 years ago
6 0
X²+2x+y²-2y=14
adding 1+1 both sides

x²+2x+1+y²-2y+1=14+1+1

(x+1)² +(y-1)² = 4²

x=-1 y= 1 r = 4

hope it helps !!

FrozenT [24]3 years ago
5 0
We need to convert the equation of the circle to standard form only then we can find the radius and the center of the circle.

x^{2} +2x+ y^{2}-2y-14=0 \\  \\ 
x^{2} +2x+ y^{2}-2y=14 \\  \\ 
x^{2} +2(x)(1)+ y^{2}-2(y)(1)=14 \\  \\ 
 x^{2} +2x+1 + (y^{2}-2y+1)=14+1+1  \\  \\ 
(x+1)^{2}+(y-1)^{2} =16 


From this equation we can write:

Center of the circle is (-1,1) and the radius of the circle is 4.
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Will give Brainlest Answer please answer i need help
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Answer:

  C.  {-1, 5, 8}

Step-by-step explanation:

Use each of the domain values in the function to see what the corresponding range value is.

  f(-1) = 5 -3(-1) = 8

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  f(2) = 5 -3(2) = -1

The range is the set of numbers {-1, 5, 8}.

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<em>Additional comment</em>

The values in a set are generally listed lowest to highest. The coefficient of x in the equation for f(x) is negative, meaning the lowest range value will correspond to the highest domain value. If you start by finding f(2) = -1, you immediately eliminate all answer choices except B and C.

Those choices differ only in the middle value, so you can tell which is correct by evaluating f(x) for the middle domain value: f(0) = 5. Only one answer choice has both -1 and 5 in the set.

(There are two answers here: how you work the problem, and how you game a multiple choice question.)

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2 years ago
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Ugo [173]

Answer:

Step-by-step explanation:

The formula for determining the volume of a cylinder is expressed as

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h represents the height of the cylinder.

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From the information given,

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Since the base area is 24π cm², we would determine its radius by applying the formula,

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Therefore,

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3 years ago
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Answer:

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Step-by-step explanation:

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Archy [21]

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masha68 [24]

Answer:

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