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
Tems11 [23]
4 years ago
15

Find the points of intersection of the circles x²+y²-15=0 and x²-4x+y²+2y-5=0. Check by graphing the equations.

Mathematics
1 answer:
mote1985 [20]4 years ago
6 0

Answer:

The answer to your question is:

Step-by-step explanation:

Solve by elimination

                                           -  x²  -  y²               + 15   =  0

                                             x²   +y²  - 4x + 2y - 5    =  0

                                             0       0   - 4x + 2y + 10 = 0

Solve it for x                          -4x = -2y - 10 ;     x = 1/2y + 5/2

Substitution

                                    ( 1/2y + 5/2)²+ y² - 15=0                      

                                    (y² + 2y + 25)/4 + y² - 15 = 0

                                     y² + 10y + 25 + 4y² - 60 = 0

                                     5y² + 10y - 35 = 0

Solve the equation

                               y1 = -3.83                y2 = 1.83

                             x1 = (5 - 3.83) /2        x2 = (5 + 1.83) / 2

                             x1 = 0.59                    x2 = 3.42

      Point 1 = (0.59 , -3.83)                     Point 2 ( 3.42, 1.83)

You might be interested in
PLEASE HELP SUPER EASY check the file
Anni [7]

It will be 90 days until they are at the movies again.

3 0
3 years ago
Sheldon needs to buy 7 gallons of ice cream for a family reunion. the table shows the prices for different sizes of two brands o
spayn [35]

Since 56 pints of Cold Farm ice cream cost $140, and 28 quarts of Cold Farm, ice cream cost $133, hence the large size container is the better deal for Sheldon.

From the table, we are told that <u>1 pint of Cold farm costs $2.50</u>, this can be written as:

  • 1pint = $2.50

56pints of the cold farm will cost (56 * 2.50) = $140

Similarly, <u>1 quartz of Cold farm costs $4.75</u>, this can be written as:

  • 1quartz = $4.75

28pints of the cold farm will cost (28 * 4.75) = $133

56 pints of Cold Farm ice cream cost $140, and 28 quarts of Cold Farm, ice cream cost $133, hence the large size container is the better deal for Sheldon.

Learn more on proportions here: brainly.com/question/19994681

6 0
3 years ago
Write 60/105 in its simplest form.
bekas [8.4K]

Answer:ok

Step-by-step explanation:4/7

5 0
2 years ago
Read 2 more answers
Help help help please.
Sergio [31]

546464433311\]jbuuuykuyvfutrrtur

7 0
3 years ago
For the equation 2x - y = 1, if x = 0, then y = ?
Lostsunrise [7]

Answer:

y= -1

Step-by-step explanation:

(2) (0) − y = 1

0 + − y = 1

(−y) + (0) = 1

−y = 1

Step 2: Divide both sides by -1

Y = −1

8 0
2 years ago
Other questions:
  • A restaurant has 6 1/2 pounds of jalapeno peppers, 4 3/4 pounds of red bell peppers, and 5 1/4 pounds of poblano peppers. How ma
    13·2 answers
  • Michale is traveling from San Francisco to Houston this morning. The flight will take 4 3/10 hours to complete. If the airplane
    10·1 answer
  • Jane lives in middleton, where the tax rate is 2.9%. her property is assessed at $189,000. what is her tax?
    14·2 answers
  • HELP PLEASE NEED BEFORE TOMORROW MORNING
    8·1 answer
  • What is the area of triangle DEF
    13·2 answers
  • Please help me thank you
    9·2 answers
  • Two local hotels, X and Y, rent out rooms nightly. Let X represent the number of rooms hotel X rents out nightly, and let y repr
    12·2 answers
  • Find the missing value in the graph below there are two
    13·1 answer
  • A basketball player scored 32 times during one game. She scored a total of 57 points, 2 for each two- point shots and 1 point fo
    12·1 answer
  • If an item is on sale for 10% off and you know you will need to pay a 10% tax, will the final price of the item be less than, gr
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!