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 state department of health manages issues related to which of the following? Check all that apply.
Please help ASAP 15pts
Why were slave families sometimes separated?
what is another organism besides prairie dog
2x+1=7 I forgot how to do linear equations
What is the city’s annual population growth
To make electricity using magnets you need a magnet, wire and a what?
If the probability of an event is StartFraction 2 over 7 EndFraction, what must be the probability of its complement? StartFraction 1 over 7 EndFraction StartFr
-8w = 72 (please get the answer im very confused :c
2.Solve x squared - 4x by Factoring A. x = 4 B. x = 4 and x = 0 C. x = -4 and x = 0 D. x = -4 E. None of the above