epzcherryperez
epzcherryperez epzcherryperez
  • 25-02-2020
  • Mathematics
contestada

2x - y = 4
4x - 2y=8
please help me :''')​

Respuesta :

XaniHan
XaniHan XaniHan
  • 27-02-2020

Answer:

y = 2x - 4

x = R

Step-by-step explanation:

[tex]\left \{ {{2x - y = 4} \atop {4x - 2y = 8}} \right.[/tex]

1)

2x - y = 4

-y = -2x + 4

y = 2x - 4

2) to find x

replace y by 2x - 4 in the second equation

4x -2y = 8

4x -2(2x-4) = 8

4x -4x +8 = 8

4x -4x = 8-8

4x -4x = 0

0 = 0 ⇒ any number is possible for x

Answer Link

Otras preguntas

How much did planned parenthood donate to democrats
When they laughed at my feet, they did not realize that I had put on two different shoes because I’d had to dress in the dark that morning. They did not realize
Macy is considering topics she finds personally interesting and is beginning to read some of the psychological research on some of these topics. With respect to
a good time to use the "journalistic" question words is_.
Michelle is toilet training her young daughter. The child will probably be most successful with toilet training if Michelle rewards her based on a) spontaneous
What is the chance that a person randomly selected off the street was born in May 8% 12% 20% 30%
How do I manage my writing anxiety? ​
A wire with a weight per unit length of 0.071 N/m is suspended directly above a second wire. The top wire carries a current of 72.8 A, and the bottom wire carri
some body knows how to form a subset?
A uniform metal bar is 5.00 m long and has mass 0.300 kg. The bar is pivoted on a narrow support that is 2.00 m from the left-hand end of the bar. What distance