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
kramer
3 years ago
10

Find the area of the circle whose equation is x2+y2=6x-8y​

Mathematics
1 answer:
Semenov [28]3 years ago
6 0

Answer:

Given that the equation of a circle is :

\green{ \boxed{\boxed{\begin{array}{cc}  {x}^{2}  +  {y}^{2}  = 6x - 8y \\  =  >  {x}^{2}  +  {y}^{2}   - 6x + 8y = 0 \\  =  >  {x}^{2}  +  {y}^{2}  + 2 \times ( - 3) \times x + 2 \times 4 \times y = 0 \\  \\  \sf \: standard \: equation \: o f \: circle \: is :  \\   {x}^{2}  +  {x}^{2}  + 2gx + 2fy + c = 0 \\  \\  \sf \: by \: comparing \\  \\ g =  - 3 \\ f = 4 \\ c = 0 \\  \\  \sf \: radius \:  \: r =  \sqrt{ {g}^{2}  +  {f}^{2} - c }  \\  =  \sqrt{ {( - 3)}^{2} +  {4}^{2} - 0  }  \\  =  \sqrt{9 + 16}  \\   = \sqrt{25}  \\  = 5 \: unit \\  \\  \bf \: area \:  = \pi {r}^{2}  \\  = \pi \times  {5}^{2}  \\  =\pink{ 25\pi \:  { unit }^{2} }\end{array}}}}

You might be interested in
If 1=3<br> 2=3<br> 3=5<br> 4=4<br> 5=4<br> Then, 6=?
denpristay [2]

Answer: 6=5 sorry if i am wrong

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Solve for W <br><br> T= sqrt(5/(wc)
Gnoma [55]
T= sqrt(5/wc) remove ( ) T= 5sqrt/wc multiply by wc Twc=5sqrt divide by Tc W= 5sqrt/cT hope this helps
5 0
3 years ago
Read 2 more answers
Pls help me pls help me​
Dafna11 [192]

Answer:

166.32

Step-by-step explanation:

brainliest please

5 0
3 years ago
Read 2 more answers
Write the explicit formula that represents the geometric sequence-2, 8, -32, 128
maks197457 [2]
Well,  since we know is a geometric sequence, we can always get the common ratio  of it by simply dividing one value by the one behind it... so let's do so, with say hmm -32 and 8  -32/8 = -4  <-- our common ratio

the first term is -2

\bf n^{th}\textit{ term of a geometric sequence}\\\\&#10;a_n=a_1\cdot r^{n-1}\qquad &#10;\begin{cases}&#10;n=n^{th}\ term\\&#10;a_1=\textit{first term's value}\\&#10;r=\textit{common ratio}\\&#10;----------\\&#10;a_1=-2\\&#10;r=-4&#10;\end{cases}\implies a_n=-2(-4)^{n-1}
4 0
3 years ago
14. Is x + 2 a factor of the polynomial f(x)=2x-3x²-4x+1?
defon
Thanks for the free 10x+ points .
8 0
3 years ago
Other questions:
  • Brainliest for the correct awnser!! A calculator was used to perform a linear regression on the values in the table. The results
    13·1 answer
  • What are the first two terms of the sequence defined recursively by the formula
    8·2 answers
  • Football subscription. In a community of 100,000 students, subscribers to a season ticket for football games tend to renew their
    9·2 answers
  • Explain how you got the answer
    9·1 answer
  • What is log2x=22 in exponential form
    13·1 answer
  • HELP PLEASE! 50 POINTS AND WILL MARK BRAINLIEST.
    15·1 answer
  • Explain in your own words why you would use division to change a smaller unit to a bigger one . What would happen if you multipl
    10·1 answer
  • Three dock workers load 240 crates equally onto 8 ships. How many crates are loaded onto each ship?
    11·1 answer
  • Area of the parallelogram? 308 meters squared
    12·2 answers
  • You have $30 to buy muffins. However, at the shop you can buy 1 muffin for $4. (a) Write an inequality from the above informatio
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!