misterj1019654
misterj1019654 misterj1019654
  • 19-11-2020
  • Mathematics
contestada

system by elimination

2x - y = -3
-2x - 8y = 12​

Respuesta :

gracel62303 gracel62303
  • 19-11-2020

Answer:

x= -2 y= -1

Step-by-step explanation:

stack the 2 equations on top of each other and add them together

the 2x and -2x cancel out and you are left with -9y=9

this gives you y= -1

you plug the y value into one of the equations:

2x - (-1) = -3

2x+1 = -3

2x= -4

x= -2

Answer Link

Otras preguntas

which of the following is true about gothic master builders? a.they designed the structure of the church without supervising its construction. b.their primary r
Does anyone have an answer to this question? If so please help me.
In the context of literature, what is the meaning of word choice
Suppose that G(X) = F(x+ 9). Which statement best compares the graph of G(x) with the graph of f(x)?
What are the moral principles that govern a person’s or group’s behavior known as?
I need help please. In the first paragraph, the word rival means: a. neighbor b. competitor c. customer d. manufacturer
What's erosion? A. The breakdown of rock into smaller pieces B. The removal of weathered products from rock C. A change in rock resulting from exposure t
Which sentence is an example of hyperbole? O A. I'll go insane if I don't get invited to the party. O B. The wind pushed the leaves through the yard. O C. The c
I need help please.
1. An enzyme is considered a(n) ____ because it speeds up a chemical reaction without being used up.2. In a catalyzed reaction, a reactant is often called a(n)