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
zubka84 [21]
3 years ago
10

7x²+3y²-28x-12y=-19

Mathematics
1 answer:
grigory [225]3 years ago
4 0
Complete the square for x and y.

7x^2 + 3y^2 - 28x - 12y = -19

7x^2 - 28x + 3y^2 - 12y = -19

7(x^2 - 4x) + 3(y^2 - 4y) = -19

7(x^2 - 4x + 4) + 3(y^2 - 4y + 4) = -19 + 28 + 12

7(x - 2)^2 + 3(y - 2)^2 = 21

\dfrac{(x - 2)^2}{3} + \dfrac{(y - 2)^2}{7} = 1
You might be interested in
Which term best describes the expression 2x + 2dy−3?
Margarita [4]

Answer:

the term is separated by minus (-) and plus (+) .

therefore this term is trinomial.

7 0
3 years ago
Read 2 more answers
What is the name the special hat worn during Mardi Gras?
PilotLPTM [1.2K]
Hello!!

I believe the correct answer to your question is capuchon. These are cone shaped ceremonial hats worn durning Mardi Gras.

Hope I helped with a detailed description. Have a nice night!
~Brooke❤️
3 0
2 years ago
SOMEONE PLEASE HELP HURRY (show work pls
ycow [4]
Answer is b. -1/2
worked it out in the pic

5 0
3 years ago
Read 2 more answers
15, 16, 20, and 22! PLEASE HELP
Vikentia [17]
The answer for number 16 is 20
7 0
3 years ago
Read 2 more answers
Solve by using Pythagorean Theorem, a= 5, b= x-1, and c=x
charle [14.2K]

The value of x is 13, from the values of x the values of a,b and c becomes 5, 12 and 13, which is obtained by using Pythagorean theorem.

Step-by-step explanation:

The given is,

             a = 5

             b = x - 1

             c = x

Step:1

      Pythagorean theorem is,

              a^{2} + b^{2} = c^{2}................................(1)

      (  It states that the area of the square whose side is the hypotenuse is equal to the sum of the areas of the squares on the other two sides )

      From the given values the equation (1) becomes,

                       5^{2} + (x-1) ^{2} = x^{2}

                             ( (a-b)^{2} = a^{2}  + b^{2} -2ab )

               25 + ( x^{2} + 1 - 2x ) = x^{2}

                           25 + 1 -2x = 0               ( ∵ Eliminate x^{2} in both sides)

                                     26 = 2x

                                       x = 13

Step:2

        From the values of x,

                   a = 5

                    b = ( 13 - 1 ) = 12

                   c = 13

Result:

            The value of x is 13, from the values of x the values of a,b and c becomes 5, 12 and 13, which is obtained by using Pythagorean theorem.

3 0
3 years ago
Other questions:
  • Please help me with this for points
    10·1 answer
  • What are two conditional statements that make up “ I dont drink juice if and only if it is breakfast time.”
    11·1 answer
  • I need help with #14. I checked on Desmos to see if they represent the same line, which they do. But how do you know if they rep
    8·1 answer
  • Three scatterplots are shown, along with their best-fit lines and correlation coefficients, r1, r2, and r3. Choose the correct s
    13·1 answer
  • A store specializing in mountain bikes is to open in one of two malls. If the first mall is selected, the store anticipates a ye
    14·1 answer
  • Find ten rational numbers between -2/3 and 2/3
    7·1 answer
  • QUOSLIULICI
    11·1 answer
  • Please help a girl out I'm so confused
    7·2 answers
  • PLEASE HELP ITS A TEST
    11·2 answers
  • Pls helpppppppppppppo
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!