25rhodg 25rhodg
  • 04-02-2022
  • Mathematics
contestada

y= 2x
2x + y=8
Does anyone know the answer

Respuesta :

brainsoft
brainsoft brainsoft
  • 04-02-2022

Answer:

x is 2, y is 4

Step-by-step explanation:

[tex]{ \tt{y = 2x - - - (a)}} \\ { \tt{2x + y = 8 - - - (b)}}[/tex]

» Substitute for y in equation (b) with that in equation (a)

[tex]{ \tt{2x + 2x = 8}} \\ { \tt{4x = 8}} \\ { \tt{x = 2}}[/tex]

» Find y

[tex]{ \tt{y = 2 \times 2}} \\ { \tt{y = 4}}[/tex]

Answer Link

Otras preguntas

Find Domain of the functionsquare root of (x-8)/x(x-9)
Marika and Freddy sold 70 homes for Ron Realty. If Marika sold 2.5 times as many homes as Freddy, how many homes did each sell?
Marika and Freddy sold 70 homes for Ron Realty. If Marika sold 2.5 times as many homes as Freddy, how many homes did each sell?
How were life forms affected by the rise in atmospheric oxygen levels that began 2.2 billion years ago?
(10y^3+20y^2+55y)/5y
Historians of china have traditionally dated the beginning of Chinese civilization to the founding of the what??
Scarcity is the condition of not having enough goods and services to satisfy everyone's?
Scarcity is the condition of not having enough goods and services to satisfy everyone's?
how is mass transit in cities a possible solution tk urban air pollution?
Find Domain of the functionsquare root of (x-8)/x(x-9)