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
Wewaii [24]
3 years ago
14

Suppose (12, 8) and (4, 6) are the endpoints of a diameter of a circle. Which is an equation of the circle?

Mathematics
1 answer:
In-s [12.5K]3 years ago
3 0

Answer:

(x-8)^2 + (y-7)^2 - 17 = 0

Step-by-step explanation:

The formula for the equation of a circle is:

(x-h)^2+(y-k)^2=r^2

where (h,k) is the center and r is the radius of the circle.

To first solve solve this, use the endpoints of the diameter to solve for the center of the circle using the midpoint formula, which is known as:

\frac{(x_1+x_2)}{2},\frac{(y_1+y_2)\ }{2}

The points given are (12,8) and (4,6), so plug in the coordinates into the formula.

Center = (1/2)(12+4),(1/2)(8+6)

            = (8,7)

Now, to find the radius, we can use the distance formula and use the center (8,7) and one of the endpoints, (12,8). The distance formula is known as:

\sqrt{(x_{1} -x_{2})^2 +(y_{1} -y_{2})^2 }

Radius = √(x₂- x₁)² + (y₂-y₁)²

            = √(12- 8)² + (8-7)²

            = √(4² + 1²) = √(16+ 1) = √17

            = r² = 17

Now that the radius and the center are known, the equation of the circle can be written as:

(x-8)^2 + (y-7)^2 - 17 = 0

You might be interested in
What’s the missing angle <br> ?
fomenos

Answer:

x=20

3x= 3(20)=60

4x= 4(20)=80

Step-by-step explanation:

The angles CD is 90 degrees because the small square indicates

it. Angles AD are a straight angle, therefore all the other angles within A to D, must equal 180 degree. (straight line/angle=180 degrees).

so AB + 70+ 90= 180 degrees

AB= 180 -70-90

AB=20

x=20

3x= 3(20)=60

4x= 4(20)=80

5 0
2 years ago
Read 2 more answers
Write 0.300 in word form please
liraira [26]
0.300 in word form is three tenths
6 0
3 years ago
Read 2 more answers
The given line passes through the points (0, −3) and (2, 3).
Alex Ar [27]
Well, parallel lines have the same exact slope, so hmmm what's the slope of the one that runs through <span>(0, −3) and (2, 3)?

</span>\bf \begin{array}{ccccccccc}&#10;&&x_1&&y_1&&x_2&&y_2\\&#10;%  (a,b)&#10;&&(~ 0 &,& -3~) &#10;%  (c,d)&#10;&&(~ 2 &,& 3~)&#10;\end{array}&#10;\\\\\\&#10;% slope  = m&#10;slope =  m\implies &#10;\cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{3-(-3)}{2-0}\implies \cfrac{3+3}{2-0}\implies 3
<span>
so, we're really looking for a line whose slope is 3, and runs through -1, -1

</span>\bf \begin{array}{ccccccccc}&#10;&&x_1&&y_1\\&#10;%  (a,b)&#10;&&(~ -1 &,& -1~)&#10;\end{array}&#10;\\\\\\&#10;% slope  = m&#10;slope =  m\implies 3&#10;\\\\\\&#10;% point-slope intercept&#10;\stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-(-1)=3[x-(-1)]&#10;\\\\\\&#10;y+1=3(x+1)<span>
</span>
8 0
3 years ago
Read 2 more answers
this month salespersons a made 11% of $67,530. salesperson b made 8% of $85,740. who made more commission this month? how much d
Paul [167]
Salesperson A made $7428.30
Salesperson B made $6859.20
Salesperson A made more commission this month and made $7428.30
7 0
3 years ago
Read 2 more answers
Anyone know how to do this?
sergiy2304 [10]

Answer:

11

Step-by-step explanation:

We need 60 dollars, we have 16

60-16 = 44

We need to earn 44 more dollars

At 4 dollars a pound

The money earned = lbs * dollars per pound

44 = lbs *4

Divide each side by 4

44/4 = lbs

11 = lbs

We must sell 11 more lbs

4 0
2 years ago
Other questions:
  • Twenty-five students go to lunch. Pizza costs $3 and sandwiches cost $2. Twelve students buy pizza. What is the total amount of
    15·1 answer
  • Question 1: Marty wants to plant grass in a rectangular section of his backyard. The section where he wants grass measures 6.62
    8·1 answer
  • PLEASE HELP I HAVE NO IDEA
    8·2 answers
  • What is the equation of the line perpendicular to 2x - 3y = 13 that passes through the point (-6, 5)?
    9·1 answer
  • It is asking me to insert parentasies
    13·2 answers
  • HELP FAST ITS A TIMED QUIZ ILL WILL MARK BRAINILIEST
    14·1 answer
  • Point K is graphed on a number line at 3. Point L is 11 units away from point K on the number line.
    11·1 answer
  • Which number sentence does not belong in the fact family for the numbers 7,18, and 23?
    11·1 answer
  • I NEED HELP PLEASE PLEASE IN ALGEBRA!
    14·1 answer
  • 2x+5y=50<br><br> Solve for x and then solve for y
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!