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
Marizza181 [45]
3 years ago
13

The equation of a circle in general form is ​ x2+y2+18x−36y+369=0 ​

Mathematics
2 answers:
swat323 years ago
7 0
You have to complete the square of (x²+18x+?) as well as for (y²-36y+?)

You will find: (x+9)² + (y-18)² = 36


& this is the standard equation requested
Ainat [17]3 years ago
7 0

Answer:

(x+9)^2+(y-18)^2=6^2

Step-by-step explanation:

We have been given equation of a circle in general form x^2+y^2+18x-36y+369=0. We are asked to find the equation of the circle in standard form.

We know that equation of a circle in standard form is of format: (x-h)^2+(y-k)^2=r^2, where (h,k) represents the center of the circle and r represents radius.

We will convert our given equation in standard form by completing the squares as shown below:

x^2+18x+y^2-36y+369-369=0-369    

x^2+18x+y^2-36y=-369

Adding (\frac{b}{2})^2 to both sides of our equation we will get,

(\frac{18}{2})^2=(9)^2=81

(\frac{36}{2})^2=(18)^2=324

x^2+18x+81+y^2-36y+324=-369+81+324

x^2+18x+81+y^2-36y+324=36    

(x+9)^2+(y-18)^2=6^2    

Therefore, the equation of the given circle in standard form would be (x+9)^2+(y-18)^2=6^2.

You might be interested in
If A is nonsingular, then (AT )-1 =(A-1) T . (a) Verify this theorem for 2 × 2 matrices
kipiarov [429]

Answer:

Verified

Step-by-step explanation:

Let the 2x2 matrix A be in the form of:

\left[\begin{array}{cc}a&b\\c&d\end{array}\right]

Where det(A) = ad - bc # 0 so A is nonsingular:

Then the transposed version of A is

A^T = \left[\begin{array}{cc}a&c\\b&d\end{array}\right]

Then the inverted version of transposed A is

(A^T)^{-1} = \frac{1}{ad - cb} \left[\begin{array}{cc}a&-c\\-b&d\end{array}\right]

The inverted version of A is:

A^{-1} = \frac{1}{ad - bc}\left[\begin{array}{cc}a&-b\\-c&d\end{array}\right]

The transposed version of inverted A is:

(A^{-1})^T = \frac{1}{ad - bc}\left[\begin{array}{cc}a&-c\\-b&d\end{array}\right]

We can see that

(A^T)^{-1} = (A^{-1})^T

So this theorem is true for 2 x 2 matrices

3 0
3 years ago
Write the product as a mixed number 2*2 1/3
zheka24 [161]

23/5

Maybe thats it. I tried

6 0
3 years ago
Which stands for 250 feet below sea level?
Lubov Fominskaja [6]
-250 feet, because you are 250 feet below sea level.
3 0
3 years ago
Read 2 more answers
If sarah works 40 hours a week and earns 660 dollars per payroll. how much does she make an hour
Anika [276]

Answer:16.50

Step-by-step explanation: hope it helps

5 0
2 years ago
Read 2 more answers
Ken started saving for retirement at age 35 with plans to retire at age 70. He invested an average of $600 per month in various
Irina-Kira [14]
The answer is C $499,355.18
8 0
3 years ago
Read 2 more answers
Other questions:
  • Write the converse form of: If an angle measures 180 degrees,<br> then it is a straight angle.
    5·1 answer
  • Derek flips a coin and rolls a number cube at the same time. Derek rolls an even number. Find the probability that the coin came
    14·2 answers
  • Whats 25% of 90 in full explanation
    12·2 answers
  • What are the solutions of 2x2 + 16x + 34 = 0?
    15·2 answers
  • Work out the value of (6.31×10⁵)+(2.6×10⁴) give your answer in standard form​
    12·2 answers
  • The circumference is about ___ m <br><br>use 3.14 for pi.​
    10·2 answers
  • Which is one is correct?
    12·2 answers
  • a square field has a side 150 m long .There is a road 5 m wide all around the park outside it .Find the cost of constructing the
    10·1 answer
  • (10 POINTS) ATTENTION! PLEASE HELP! WILL GIVE BRANLIEST TO ACCURATE ANSWER
    8·1 answer
  • 32x^8-50<br> 32x <br> 8<br> −50 factor completely
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!