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

what is 3a b2 b3 4b2 4 5a identify like terms
in which ways did taft helped conservation efforts and child labor problems
a beaker with water and the surrounding air are all at 24'C. after ice cubes are placed in the water, heat is transfered from
Which of these sentences uses the passive voice? You can succeed if you set goals and work hard. If I set goals and work hard, I can succeed. Success can be ach
(x - y)^2 + 4z(x - y) +3z^2 (and btw ^2 means squared and this is going for 10 points)
45 + 35n = 45 + 40n what is n?
if y=14 when x=8, find y when x=12
How did shah Abbas help the safavid empire flourish
What is the verb phrase? He might have gone to a friend's house.
what is 1/10 of 90000