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]
2 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]2 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]2 years ago
3 0

Answer:8

Step-by-step explanation:

You might be interested in
Pls help i’ll mark you brainliest
k0ka [10]

Answer:

90°

Step-by-step explanation:

please mark brainliest :))

7 0
2 years ago
Read 2 more answers
Ivan has 15 yards of green felt and 12 yards of blue felt to make 3 quilts if Ivan uses the same total number of yards for each
mixas84 [53]

Answer:

9 yards

Step-by-step explanation:

Let the length of each quilt be 'l'.

Given:

Length of green felt (g) = 15 yards

Length of blue felt (b) = 12 yards

Total number of quilts = 3

Now, the length of 3 quilts is given as:

Total\ length=l+l+l=3l ----- (1)

As per question:

Total length = Length of green felt + Length of blue felt

Total length = g+b

Total\ length=15+12=27--------- (2)

Now, comparing equations (1) and (2), we get:

3l=27\\\\l=\frac{27}{3}\\\\l=9\ yards

Hence, each quilt measures 9 yards in length.

3 0
3 years ago
what the area of a triangle whose base is 23 inches and whose height is 28. write your answer in decimal
Aneli [31]

Answer:

322

Step-by-step explanation:

Triangle area = base*height)2Here, area = 23*28/2=322

5 0
2 years ago
Read 2 more answers
I need help on this also could I get an explanation on how you solved it? Please don't take my points ill get u banned. :P
kenny6666 [7]

Answer:

1/2

Step-by-step explanation:

4 is the total right and 5/7 make it half so it will be 1/2. hope this helps!

6 0
2 years ago
Read 2 more answers
What is the probability of 5 movie downloads
yKpoI14uk [10]
The probability of 5 movie downloads would be about 1 to 2 percent
5 0
3 years ago
Other questions:
  • Jared buys 2.4 pounds of broccoli for $3.24. Which epuation could Jared use to find c, the cost of each pound of broccoli
    11·1 answer
  • F(x)=2x^2-x-10 part a: what are the X intercepts of the graph of f(x)? Show your work
    8·1 answer
  • The Math Club is sponsoring a bake sale. If their goal is to raise at least $300, how many pies must they sell at $6.00 each in
    14·2 answers
  • If ƒ = {(2, -4), (2, 7) (3, 5), (4, -1), (8, 7)}, then ƒ is a function.
    12·1 answer
  • -19m^2 numerical coefficient is ?
    9·1 answer
  • In the xy-plane, if (-1, 0) is a solution to the system of inequalities y < x + c and y < -x - d, which of the following m
    14·1 answer
  • In 16 years, Marissa will be five times older than she is today. How old is she?
    15·1 answer
  • "Taylor's Toys" produced 600 remote control cars in two colors. For blue cars they produced 60 more than 3 times as many orange
    8·1 answer
  • Tyler’s brother works in a shoe store. The store was selling a pair of shoes for $80. They now are on sale for $50. What is the
    10·2 answers
  • Geoff wants to make a 100 ml of 5% alcohol solution mixing a quantity of a 2% alcohol solution with a 7% alcohol solution. What
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!