haileym368 haileym368
  • 02-06-2021
  • Mathematics
contestada

3x+4y=−2. 2x−4y=−8
Select the statement that correctly describes the solution to this system of equations.

3x4y2 2x4y8 Select the statement that correctly describes the solution to this system of equations class=

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 02-06-2021

Answer:

One solution at (-2,1)

Step-by-step explanation:

3x+4y=−2.

2x−4y=−8

Add the two equations together

3x+4y=−2

2x−4y=−8

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

5x +0y = -10

Divide by 5

5x/5 = -10/5

x=-2

Now find y

2x-4y = -8

2*-2 -4y = -8

-4-4y = -8

Add 4 to each side

-4+4 -4y = -8+4

-4y = -4

Divide by -4

y = 1

Answer Link

Otras preguntas

The functions f and g are defined as follows. f(x)=2x²-3x g(x) = -4x-1 Find f(-2) and g (7). Simplify your answers as much as possible. f(-2) = 믐 X 9 (7) = Ś ?
Complete the steps to identify all potential rational roots of f(x) = 3x2 – x – 4.
Supreme Court cases typically have to deal with
How does the teacher manage transitions between periods and the time before and after break times?
Which function is represented in this graph?
B. Use the polite phrases in the box to ask permission for items. Would you mind if I...? Would it be alright if I...? Is it OK if I...? I wonder if it might be
Research and compare 4 different kinds of modern governments
What is the answer to 6 - 1 1/2
Keisha pumped 6 gallons of water into her pool each minute for 48 minutes what was the total change in the amount of water in the pool
what was a result of the fact that people convicted of crimes could be legally forced to work