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
nignag [31]
3 years ago
11

The points A-1,-9) and K(5,1) are endpoints of a diameter of circle 5. Which equation represents circle S?

Mathematics
1 answer:
Lilit [14]3 years ago
4 0

Answer:

A

Step-by-step explanation:

if (x1,y1) and (x2,y2) are the extremities of diameter,then eq. of circle is

(x-x1)(x-x2)+(y-y1)(y-y2)=0

reqd. eq. is (x+1)(x-5)+(y+9)(y-1)=0

x^{2} +x-5x-5+y^2+9y-y-9=0\\x^{2} -4x+y^2+8y-14=0\\compare with x^2+y^2+2gx+2fy+c=0\\center (-g,-f) \\radius r=\sqrt{g^2+f^2-c}

center is (2,-4)

r=√(2²+(-4)²-(-14))

=√(4+16+14)

=√(34)

eq. of circle is (x-2)²+(y+4)²=34

or

(x²-4x)+(y²+8y)=14

(x²-4x+4)+(y²+8y+16)=14+4+16

(x-2)²+(y+4)²=34

You might be interested in
Which expression is equivalent to -15x + 39?
Maurinko [17]
B use distributive property
5 0
3 years ago
Read 2 more answers
The box and whiskers plot represents the results of the same math test being given to two different classes. According to the bo
densk [106]

Answer: Answer A: Both classes have a range of 45

Step-by-step explanation:

above the two graphs we can see a number line ranging from 50-100

bellow that, we can see 2 box and whisker plots, one for second period and one for fourth period. the larger rectangular boxes show all the number results, the line in between them states the average result. Both lines have starting points at 55 and ending points at 100.

100-55=45   45 being the range. Since 2nd and 4th both share the same range answer A could possibly be correct

B is wrong because 2nd period has a median of 90

C is wrong because no periods have a median of 100

D is wrong because most of the students scored an 85+

conclusion: answer A is correct

4 0
3 years ago
Read 2 more answers
Write a whole number that rounds to 10,000 if we are rounding to the nearest ten thousand
Inessa [10]
If you were to round it, a possible answer could be 9,997
8 0
3 years ago
Which student evaluated the power correctly?
Colt1911 [192]

Answer:jerry

Step-by-step explanation:

Just plug in the calculator and see which

6 0
3 years ago
HELP!
olchik [2.2K]
C.35cm
Should be the right answer
5 0
3 years ago
Other questions:
  • Multiply. Please help ASAP!<br> ( -2/3 )( 1/6 )
    12·2 answers
  • Can someone help? I dont get it, where is 1/4??? i just want to know where 1/4 is.
    9·2 answers
  • Can you answer this one question please
    5·1 answer
  • What the equivalent to the given decimal<br><br> 5.300
    12·2 answers
  • Use the GCF to factor this expression.<br><br> 40x + 24y – 56
    14·2 answers
  • What is the volume, in cubic ft, of a rectangular prism with a height of 17ft, a width of
    7·1 answer
  • If you earn $134 in 8 hours, how much do you earn per hour?
    13·1 answer
  • Find the value of c in the triangle shown below.
    8·2 answers
  • I just need help it seems easy but not for me
    7·2 answers
  • Identify the key characteristics of the exponential function.<br> y =<br> 2(1)"
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!