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Ratling [72]
2 years ago
8

Which is the center of a circle whose equation is x2+y2+4x-8y+11=0?

Mathematics
1 answer:
Nikolay [14]2 years ago
6 0

Answer:

Center (-2 , 4)

Step-by-step explanation:

x^2 + 4x + y^2 - 8y = - 11

(x^2 + 4x + (4/2)^2 + (y^2 - 8y + (8/2)^2 ) = - 11 + 4 + 16

(x + 2)^2 + (y -  4)^2 = 9

Center (-2,  4)

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creativ13 [48]

Answer:

Vertical opposite angles are the same so the answer is D.

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3 years ago
Solve for x:1/2(x-2)+1/3(x-3)+1/4(x-4)
Archy [21]

Answer:

\frac{1}{12}  \times (13x - 36)

4 0
2 years ago
Find the GCF of numbers 132 and 242 using prime factorization.
tatyana61 [14]

Answer:

1)Find the prime factorization of 242

242 = 2 × 11 × 11Step-by-step explanation:

2)Find the prime factorization of 132

132 = 2 × 2 × 3 × 11

3)To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 2 × 11

The lost one 4) GCF = 22

6 0
2 years ago
a group of friends went to lunch. the bill, before sales tax and tip, was $37.50. a sales tax of 8% was added. the group then ti
valentina_108 [34]
First, there was $37.50.
Then, there was a tax of 8%.
Then, there was a tip of 18%.
Since the tip is after the tax, it's not going to affect it, and we can essentially ignore it.

The real question here is just <em>what is 8% of $37.50?</em>

To find the percent of something, first you need to put the percent as a decimal.

8% in decimal form is 0.08 (If you think about it literally, they're both 8 hundredths)

Finally, just multiply the percent in decimal form by the number.

37.50 dollars × 0.08 = 3 dollars.<em />
6 0
3 years ago
Read 2 more answers
A box contains 8 videotapes and 5 DVDs. I’m how many ways can one videotape and one DVD be selected?
Art [367]

Answer:

40

Step-by-step explanation:

8x5=40

5 0
3 years ago
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