Heygirl9632 Heygirl9632

04-05-2021
Mathematics

contestada

Which system of equations is equivalent to the system of equations shown? 2x + 5y = -2 4x + 7y = 8

Respuesta :

Yang100 Yang100

05-05-2021

Answer:

x=9, y=-4. (9, -4).

Step-by-step explanation:

2x+5y=-2

4x+7y=8

--------------

-2(2x+5y)=-2(-2)

4x+7y=8

---------------------

-4x-10y=4

4x+7y=8

--------------

-3y=12

y=12/-3

y=-4

2x+5(-4)=-2

2x-20=-2

2x=-2+20

2x=18

x=18/2

x=9

Answer Link

Otras preguntas

Viruses can infect bacteria as well as other organisms. What does the virus inject into the bacterial cell? a. viral nucleic acid b. capsid proteins c. hormo

What is the nth term of the arithmetic sequence? 7, 5, 3, 1, … a. –2n b. 7 – 2n c. 9 – 2n d. n – 2

The Federal Pure Food and Drug Act of 1906 was concerned with a. establishing guidelines for dispensing controlled substances. b. establishing guidelines for

What is asexual reproduction?

The legal process of disposing of a person's estate after her death is called

Hobbes calls life in the state of nature "nasty, brutish, and short” because

Which of the following income statement figures would probably be the best indicator of a company’s future performance? a. Total revenues b. Income from opera

Penyelesaian dari sistem persamaan linier dua variabel 5x-y=-8 dan ×+3y=8 adalah

Mary Wollstonecraft believed that women should have equal rights in all of the following areas of life, except a. politics. c. economics. b. education. d. d

which of the following is true about correlation and causation?