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
Phantasy [73]
3 years ago
13

Find the equation of the circle that has a diameter with endpoint located at (-5,-3) and (-11,-3).

Mathematics
1 answer:
GREYUIT [131]3 years ago
7 0
Check the picture below.

you can pretty much, without having to use the distance formula, see the diameter is 6 units long, thus the radius is half that or 3 then.

now, without having to use the midpoint formula, if we move from either endpoint inwards 3 units, we'll end up at the center, -5 -3, is just -8, so the center will be at -8, -3.

\bf \textit{equation of a circle}\\\\ 
(x-{{ h}})^2+(y-{{ k}})^2={{ r}}^2
\qquad 
center~~(\stackrel{-8}{{{ h}}},\stackrel{-3}{{{ k}}})\qquad \qquad 
radius=\stackrel{3}{{{ r}}}
\\\\\\\
[x-(-8)]^2+[y-(-3)]^2=3^2\implies (x+8)^2+(y+3)^2=9

You might be interested in
The area of a circular place is 45 square inches.estimate the radius to the nearest integer
geniusboy [140]
A = π*r^2
r = √(A/π) = √(45/π) ≈ 3.78

The radius is approximately 4 inches.
7 0
3 years ago
Find the height <br> 11in 14in<br> h=
jeka57 [31]

Answer:

h = \sqrt{72}in

Step-by-step explanation:

We have a right triangle with long side of 11in and smaller sides 14in/2=7in and h.

We know that

h^2 + (7in)^2 = (11in)^2\\h^2 = 121in^2 - 49in^2 = 72in^2\\h = \sqrt{72}in

6 0
3 years ago
an employee adds 160 fluid ounces of chemical to a feature that holds 120,000 gallons of water. did the employee add yhe correct
Hitman42 [59]
We are given a volume of 160 fluid ounces of chemical which is added to a container that holds 120,000 gallons of water. Assuming that the chemical has the same density as water, we just need to convert 120,000 gallons to ounces.

A conversion factor is taken from literature, 1 gallon is equivalent to 128 fluid ounces. So 160 fluid ounces is only 1.25 gallons, thus occupying minimal space in the container. The employee could add more of the chemical in the container. He can actually add 15360000 fluid ounces in total. 
5 0
3 years ago
HELP ASAP!! WILL MARK BRAINIST!!! ASAP!!<br> n - 2 divided by -3 = -6 what is the value of n?
xenn [34]

Answer:

= -6 2/3

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
The formula for the volume of a sphere is 4 ⁄ 3 πr^3
lozanna [386]

Answer:

the volume of a sphere = 4 ⁄ 3 πr^3

when r=2inches

Step-by-step explanation:

the volume of a sphere = 4 ⁄ 3 π×2³=32/3π or 33.5 inches³

3 0
3 years ago
Read 2 more answers
Other questions:
  • I need help please for trigonometry finding ratios
    8·1 answer
  • I am completely lost.
    15·1 answer
  • In 1971 the us dollar became part of the total fiat system meaning what?
    12·1 answer
  • Find the perimeter of parallelogram ABCD if AB=5 and BC=2
    15·2 answers
  • Simplify the following expression. a^-3/a^-3
    7·1 answer
  • Im still bored so entertain me pls
    8·1 answer
  • Median 10 24 9 18 15 28 12 27 25 29 10 26
    7·2 answers
  • Easy algebra! Just need help with this one
    5·1 answer
  • Pls help!! (20 points)
    9·1 answer
  • The sum of the measures of the angles of a triangle is 180. The sum of the measures of the second and third angles is three time
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!