1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
jolli1 [7]
3 years ago
7

What is the radius of a circle given by equation x^2 + y^2 - 2x + 8y - 47 = 0

Mathematics
2 answers:
Lera25 [3.4K]3 years ago
7 0
X^2 + y^2 - 2x + 8y - 47 = 0
x^2 + y^2 - 2x + 8y = 47
(x^2 - 2x) + (y^2 + 8y) = 47
(x^2 - 2(1)x) + (y^2 + 2(4)y) = 47
(x^2 - 2(1)x + 1^2) + (y^2 + 2(4)y + 4^2) = 47 + 1^2 + 4^2
(x - 1)^2 + (y + 4)^2 = 64 = 8^2
r=8
tresset_1 [31]3 years ago
3 0

Answer:8

Step-by-step explanation:

You might be interested in
5-2x/3=x solve for x
Mrrafil [7]

5-2x/3-5=x-5

-2x/3=x-5

-2x=3x-15

-5x=-15

Answer: x=3

8 0
3 years ago
A grant for students who intend to become teachers is known as the.
Lilit [14]

Answer:

A TEACH GRANT

Step-by-step explanation:

It stands for Teacher Education Assistance for College and Higher Education

7 0
3 years ago
Read 2 more answers
After spending $3,450 for tables and $3,950 for chairs, a convention center manager finds that the total is 4% more than he spen
g100num [7]
We are given with two current costs : $3,450 for tables and $3,950 for chairs .The total cost then is equal to $7,400. This is said to be 4% more than he spent  last year. so last year's expenses should be <span> $7,400 / 1.04 equal to $7115.39. The cost last year is expected to be less</span>
4 0
3 years ago
Read 2 more answers
Melania walked her dog 2 1/5 miles. Cathy walked her dog 1 3/4 times as far as Melania did. How many miles did Cathy walk her do
Step2247 [10]
Make the fractions improper to multiply.2 1/5 becomes 11/5 and 1 3/4 becomes 7/4. multiply the numerators then multiply the denominators. you get 77/20, which is simplest form. don't let teachers feed you that bs about it having to be a mixed number. an improper fraction is way more useful.
5 0
3 years ago
Jane and her husband deposited $500 in an account on their wedding day and each subsequent anniversary. The money was deposited
zysi [14]
Total = 500 * ([(1 + .07)^26 -1] / .07) -500
Total = 500 * (<span><span>4.8073529249 </span> / .07) -500
</span>Total = 500 * (<span>68.6764703562) -500
</span>Total = <span> <span> <span> 33,838.24
</span></span>
Source:
http://www.1728.org/annuity.htm

</span>

3 0
3 years ago
Other questions:
  • What is the domain of this function?<br><br><br> {x| x &gt; }
    10·2 answers
  • The perimeter of the triangular park is 16x-4. What is the missing length? (Simply the answer)
    5·2 answers
  • What is the value of 3 in 23
    15·2 answers
  • Anybody please help me with this.... I have a very important grade relying on this
    7·2 answers
  • 20/10 as a mixed number
    6·2 answers
  • The ratio of the number of miles Kyle drives to the number of hours he is driving is 468 to 9. What is Kyle's rate of speed? A)
    7·2 answers
  • What doesIf 7! = 7x6x5x4x3x2x1 then 5! =
    9·2 answers
  • How do you solve 4x^6/2x-6
    5·1 answer
  • What is the the radius of a circle with the circumference of 28
    7·1 answer
  • Three consecutive integers have a sum of 42. Find the integers.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!