honeybaker100 honeybaker100
  • 12-01-2020
  • Mathematics
contestada

Solve the system of equations -4x+8y=40−4x+8y=40 and -2x+y=-10−2x+y=−10 by combining the equations.

Respuesta :

andrew8253 andrew8253
  • 18-01-2020

Answer:

The answer is x = y = 10.

Step-by-step explanation:

It is given that, [tex]-4x + 8y = 40\\-x + 2y = 10\\x = 2y - 10[/tex].

Another equation is given by, [tex]-2x + y = -10\\y = 2x - 10[/tex].

Putting the value x = 2y - 10, in the second equation, we get [tex]y = 4y - 20 - 10\\3y = 30\\y = 10[/tex].

[tex]x = 2y - 10 = 20 - 10 = 10[/tex]

Answer Link

Otras preguntas

Can someone tell me how to solve this and give me the answer please?
The height of Japanese atrocity in China was reached at the Rape of A) Beijing. B) Shanghai. C) Hong Kong. D) Nanjing. E) Manchukuo.
What does Shelley mean by impetus when he asks the wind, "be thought me,impetus one!"?
Jayne says that 0.45 is equal to 4/10 is she correct
If you want to insert a column into an existing table, what would you do? a. Click Column in the Insert tab. b. Click one of the insert buttons in the Rows &a
Which of the following will help "sober up" (or lower the BAL) of an intoxicated person? a. Exercise b. Black coffee c. Time d. A cold shower
The mass of a tiger at a zoo is 135 kilograms. Randy's cat has a mass of 5,000 grams. How many times greater is the mass of the tiger than the mass of Randy's c
What do steroids strengthen?
Who won the Election of 1936? a. Franklin Delano Roosevelt b. Alfred M. Landon c. Huey Long d. Woodrow Wilson
Differentiated plant cells and tissues include _____.