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White raven [17]
3 years ago
12

The equation for a circle is ​x^2 − 8x + y^2 - 2y - 8 = 0

Mathematics
1 answer:
Ivanshal [37]3 years ago
6 0

Answer:

B

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

To obtain this form use the method of completing the square

Given

x² - 8x + y² - 2y - 8 = 0 ( add 8 to both sides )

x² - 8x + y² - 2y = 8

add ( half the coefficient of the x/y terms )² to both sides

x² + 2(- 4)x + 16 + y² + 2(- 1)y + 1 = 8 + 16 + 1

(x - 4)² + (y - 1)² = 25 → B

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Paige earned $15.50 per hour. She received a 15% raise. How much more does Paige earn now per hour?
Evgen [1.6K]

Answer:

232.5

Step-by-step explanation:

If you take 15.50 and multiply it by 15 you get 232.5 if its wrong my apologies

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Rounding 255 to the nearest 5percent
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Answer:

It would be 260

Step-by-step explanation:

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5 0
3 years ago
There are 180 dogs. If 35% of them are huskies, how many huskies are there? *<br> Your answer
raketka [301]

Answer:

The answer is: 63

Step-by-step explanation:

Divide 180 by 35% to find how many are huskies

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Check on calculator to make sure: 180 ÷ 35% = 63

3 0
3 years ago
If four blue marbles and eight non-blue marbles make a probability of 0.33, how many non-blue marbles do you need to combine wit
den301095 [7]

The number of non-blue marbles you need to combine with the blue marbles to achieve a probability of 0.1 is 28.

<h3>How many non-blue marbles are needed?</h3>

Probability determines the odds that a random event would happen. The probability the event occurs is 1 and the probability that the event does not occur is 0.

The more likely the event is to happen, the closer the probability value would be to 1. The less likely it is for the event not to happen, the closer the probability value would be to zero.

Probability of picking a blue marble = number of blue marble / total number of marbles

4 / (4 + 8)

4/12 = 0.33

The number of non-blue marbles needed = ( 4 / 0.1) - 12

40 - 12 = 28

To learn more about probability, please check: brainly.com/question/13234031

#SPJ1

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2 years ago
The question is
zlopas [31]
The answer is 153,328
6 0
3 years ago
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