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
goldfiish [28.3K]
3 years ago
14

What is the equation of the circle with a diameter whose endpoints are (-3,-9) and (-7,1)?

Mathematics
2 answers:
DerKrebs [107]3 years ago
7 0

Answer:

12

Step-by-step explanation:

Andrew [12]3 years ago
5 0

Answer:

<em>( x + 5 )² + ( y + 4 )² = 29 </em>

Step-by-step explanation:

Equation of the circle is

( x - h )² + ( y - k )² = r²

( h, k ) are coordinates of the center

~~~~~~~~~~~~~~~~~~~~~

Coordinates of the center of the circle are

( \frac{-3-7}{2} , \frac{-9+1}{2} ) = ( - 5 , - 4 )

d = 2√29 ⇒ r = √29

<em>( x + 5 )² + ( y + 4 )² = 29</em>

You might be interested in
2.00+7.50x=8.00+6.00x
olya-2409 [2.1K]
1.35 you first have to add like terms . 2.00 + 8.00 = 10.00 . Then 7.50x + 6.00x = 13.50x. Divide each side by 13.50x . 13.50x/13.50x = x and 10.00/13.50x=1.35 so x = 1.35
8 0
3 years ago
Help pls!! Which statement is true of the transformation from triangle ABC to triangle A’ B’ C’ ?
ExtremeBDS [4]

Answer:

corresponding

Step-by-step explanation:

corresponding side by a factor 2

8 0
3 years ago
8 - 6x + 3x = -8x - 3x <br> solve for x
Inessa [10]

Answer:

-1

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The grades received by 200 students follow a normal distribution. The mean of the grades is 70%, and the standard deviation is 7
alexandr402 [8]
It may help you to consider the standard normal curve.  If the mean here is 70%, then 0.5 of the area under this curve.  In other words, half the students received a grade > 70%.  That would be 100 students.

Note that 84 is 2 std dev above the mean.

Recall the Empirical Rule:  95% of scores lie within 2 std. dev of the mean.
Measuring from the mean, that would be 47.5% above the mean and 47.5% below the mean.  The area to the right of the mean is 0.5.  Subtract 0.475 from that to obtain the fraction of students who rec'd a grade greater than 2 std dev from the mean:  It's 0.025.

Then the # of students who rec'd a grade greater than 84% would be
0.025(200 students) = 5 students.
7 0
3 years ago
Read 2 more answers
Can someone help me please?
Tamiku [17]

Answer:

Sure what is it?

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • Factor. x^3+5x^2-4x-20
    5·1 answer
  • Belinda is thinking about buying a house for $249,000. The table below shows the projected value of two different houses for thr
    11·1 answer
  • Using substitutional method, solve the problem.<br><br> x= 4y<br> 2x-y=-1
    13·1 answer
  • Help ASAP , 15 points and a brainy.
    5·2 answers
  • A tree broke 14 ft. above the ground. The top of the tree now touches the level ground and the trunk is still partially attached
    9·1 answer
  • Express the complex number in trigonometric form.<br><br> -6 + 6\sqrt(3) i
    8·1 answer
  • If a quadratic function has x-intercepts at 2 = -
    12·1 answer
  • What is the percent of decrease from 600,000 to 60,000? Write your answer using a percent sign (%).​
    9·2 answers
  • What is the effect on the graph of f(x) = x2 when it is transformed to h(x) = 1/6x2 - 9?
    7·1 answer
  • Nat has 2 episodes filmed for her new series. She plans
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!