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Fittoniya [83]
4 years ago
13

The equation of a circle is given below . Identify the center and the radius. x ^ 2 + y ^ 2 + 8x - 4y + 11 = 0

Mathematics
1 answer:
lidiya [134]4 years ago
8 0

Answer:

Centre: (-4,2)

Radius: 3

Step-by-step explanation:

h = 8/-2 = -4

k = -4/-2 = 2

(-4)² + 2² - 11 = r²

r² = 9

r = 3

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4 years ago
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Mr. Mandel gave his class 12 minutes to read. 5 1/2 pages in that time. At what rate, in pages per hour, did Claire read?
Eva8 [605]
5 1/2 pages in 12 minutes.
11/2 pages in 12 minutes 

How many pages in an hour?
well, an hour has 60 minutes

Let's write a proportion
11/2 / 12 = x/60
cross multiply
(11/2 * 60) = 12x
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divide both sides by 12
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Hope this helps
8 0
3 years ago
How can you find f(4) if f(x)=7x^(2)-5
VashaNatasha [74]

Answer:

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Step-by-step explanation:

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7 0
3 years ago
Which of the following describes the data set?
professor190 [17]
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Just make sure that the numbers are in order before you analyze.
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3 years ago
What is the answer to this repeated subtraction problem
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