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
zysi [14]
3 years ago
8

Which conic section does the equation below describe? x^2+y^2+2x-8y-13=0

Mathematics
1 answer:
Gre4nikov [31]3 years ago
3 0

Answer:  B) Circle

<u>Step-by-step explanation:</u>

First, complete the square:

x² + 2x + <u>  1   </u>  + y² - 8y + <u>  16  </u> = 13 + <u>  1  </u> + <u>  16  </u>

       ↓       ↑             ↓         ↑

   (2/2) = (1)²          (-8/2) = (-4)²

       (x + 1)²    +             (y - 4)²   =  30

The result is a circle whose center is (-1, 4) and radius is √30

You might be interested in
Nate is constructing a tangent line to a circle he drew from a point outside the circle. Once he has the circle and the point is
Tema [17]

Answer:

The next step is to find the point on the circle which makes a tangent line that passes through the outside point.

Step-by-step explanation:

A tangent line to a circle is a line that touches the circle at exactly one point. You need two points to draw a line. You already have one point and the circle, then you need the other point, which lies on the circle. These two points have to lie on the same line. Notice that there are two possible tangent lines.

8 0
3 years ago
Find the sum of the geometric series 6Σ3i i=2
topjm [15]

\sum_{3}^{6}2=\sum_{0}^{3}2=2+2+2=\boxed{6}

Or did you mean:

6\times\sum{3i}=6\times\sum{6}=6\times6=\boxed{36}

6 0
4 years ago
Quotient 600 divided by 2/3 tells how far a tortoise can move in one hour
Arte-miy333 [17]
I kept getting 900 i am sorry if that is incorrect
6 0
4 years ago
Read 2 more answers
Find inequality represented by graph please help
kirill115 [55]
U have a dashed line...meaning there is no equal sign in the problem.....it goes thru the origin (0,0)...meaning the y int is 0....u have a slope of 3/4

so ur inequality is : y = 3/4x <==
5 0
3 years ago
Please help me solve the question below
elixir [45]

Answer:

D

Step-by-step explanation:

when x=0, y=2

7 0
2 years ago
Other questions:
  • What is solution set for the quadratic equation ×^2 + 10×+25=0​
    13·1 answer
  • Hate math to be honest
    5·2 answers
  • What other ways can you write 18:4
    14·2 answers
  • Emily is entering a bicycle race for charity. Her mother pledges $0.30 for every 0.5 mile she
    6·2 answers
  • The increase in length of an aluminum rod is twice the increase in length of an Invar rod with only a third of the temperature i
    7·1 answer
  • ILL MARK U BRAINLIEST!!
    12·2 answers
  • A village school starts at 8.30am and end at 3.45pm.how long is the school day<br>​
    8·2 answers
  • Solve the equation for x:<br> |5 + 8 + 2x| = 21
    11·1 answer
  • You invest $1,000 into your retirement account. Your money earns 12% per year (in other words, your money grows 12% per year). W
    14·2 answers
  • The function f(x) = –two-sevenths (five-thirds)x is reflected over the y-axis to create g(x). which points represent ordered pai
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!