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
givi [52]
3 years ago
13

Write an equation for a circle with a diameter that has endpointsat (-4, -7) and (-2 ,-5)

Mathematics
1 answer:
sergiy2304 [10]3 years ago
7 0

Answer:

(x + 3)^2 + (y + 6)^2 = (√2)^2 = 2

Step-by-step explanation:

The standard equation for a circle with center at (h, k) and radius r is

(x - h)^2 + (y - k)^2 = r^2.  We need to find h, k and r for this particular circle.

The length of the radius is half the length of the diameter.  Find the length of this diameter first, and than halve the result.

diameter^2 = 2^2 + 2^2, or diameter^2 = 8, or diameter = √8 = 2√2.

This is because x changes from -4 to -2 (+2) and y changes from -7 to -5 (+2).

Then the radius is r = 2√2.

The coordinates of the center are found using the midpoint formula:

                 -4-2

xcenter = -------- = -3

                    2

                 -7-5

ycenter = -------- = - 6

                     2

Inserting -3 for h, -6 for k and √2 for r, we get:

(x + 3)^2 + (y + 6)^2 = (√2)^2 = 2

You might be interested in
HELPPP ASAP PLEASE FOR BRAINLEST
Rasek [7]

Answer:

D

Step-by-step explanation:

A system of linear equations has infinite solutions when the graphs are the exact same line.

Therefore, the answer is D

7 0
2 years ago
Which figure has a greater area?<br>19 ft<br>16.4 ft<br>.<br>15 ft<br>16.1 ft​
Makovka662 [10]

Answer:

green triangle

Step-by-step explanation:

The green triangle has an area of

A = 1/2 bh

A = 1/2 (15) * 19

A =142.5 ft^2

The blue triangle has an area of

A = 1/2 bh

A = 1/2(16.1) (16.4)

A =132.02 ft^2

The green triangle has a greater area

7 0
3 years ago
How to use original price and markup to find retail price? Original price is $62 and %15 mark up.. What's the retail price?
Sonbull [250]

Answer:

pretty sure its $72.94

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
If if Spencer spent a total of $704.00 in the month of July, which is the best estimate for the amount of money he spent on clot
Maksim231197 [3]

Answer:

Clothing = \$190.0

Step-by-step explanation:

Given [Missing details]

Spencer's expenses

Clothing = 27\%

Gasoline = 11\%

Food = 44\%

Entertainment = 18\%

Total= \$704.00

Required:

An estimate for the amount spent on clothing

To do this, simply multiply the clothing percentage by the total amount.

Clothing = 27\% * \$704.00

Clothing = 0.27 * \$704.00

Clothing = \$190.08

Approximate

Clothing = \$190.0

6 0
3 years ago
What is the expanded form of the decimal 7664.23? A) (7 x 100) + (6 x 10) + (6 x 1) + (4 x 1 10 ) Eliminate B) (7 x 100) + (6 x
Firlakuza [10]

Answer:

D

Step-by-step explanation:

D) (7 x 1000) + (6 x 100) + (6 x 10) + (4 x 1) + (2 x 1 10 ) + (3 x 1 100 )

3 0
3 years ago
Other questions:
  • Find the lateral area of the cone in terms of pi.
    12·1 answer
  • Find the domain of the function…. f(x) = 16x + 6
    7·1 answer
  • On the shelves of Maria's bookcase,1/2 of the books are mysteries,1/10 are science fiction, 1/5 are biographies,and the remainin
    13·1 answer
  • Which is shown, an altitude, a median, or neither?
    10·1 answer
  • Can someone pls help? ab to fail geometry. any help is nice.
    10·1 answer
  • Simplify 15x^2-18/6 <br><br> A. 15x+3<br> B. X+3<br> C. 5x^2-18/2<br> D. 5x^2-6/2
    12·1 answer
  • Help help help help help help help please
    15·1 answer
  • The mean of Alice's last 5 math test scores is 88. The first 4 of these 5 math test scores were 87, 75, 93, and 85. What score d
    10·1 answer
  • What is volume of a cube with a side length of 5cm
    8·1 answer
  • Can someone please give me the (Answers) to this? ... please ...<br><br> I need help….
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!