02-11-2016
Mathematics

contestada

-x+2y=9
-7x-2y=-1
Solve each system by elimination

Respuesta :

03-11-2016

x - 2y = - 9
7x + 2y = 1

x - 2y = - 9
(+)
7x + 2y = 1
___________
8x = - 8

x = - 1

- 1 - 2y = - 9
2y = 8
y = 4

i am a mathematics teacher. if anything to ask please pm me

Answer Link

Otras preguntas

Which number is 164,502,423 decreased by 100,000?

How to measure Population Density?

Solve. –30 = 6z a. –5 b. –6 c. –24 d. –180

The data showed that there was no significant difference in healing times between the two groups, so the researcher concluded that calcium intake has no effect

Which statement about novels is true? A.They use dramatic elements to depict the flaws of human nature in a succinct, poignant way. B.They use poetic techniques

What are the two houses of Congress called that are impeached

any notable feature of an organism is called

needles made from animals bones are fossils or artifacts

What region of the United States is the Dust Bowl associated with?

Why did so many Native American peoples adopt Christianity in Latin America during the 1500s?