andybiersack154
andybiersack154 andybiersack154
  • 01-02-2019
  • Mathematics
contestada

solve the system of equations. 2x-2y=-4 and x+y=8. PLEASE SHOW WORK

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 05-02-2019

Answer:

  (x, y) = (3, 5)

Step-by-step explanation:

It works well to divide the first equation by 2, so the system is ...

  • x -y = -2
  • x +y = 8

Now, adding the two equations together gives ...

  2x = 6

  x = 3 . . . . divide by 2

Substituting that into either equation gives you an equation for y.

  3 - y = -2

  5 - y = 0 . . . . add 2

  5 = y . . . . . . . add y

The solution is (x, y) = (3, 5).

Answer Link

Otras preguntas

r is in the middle of pqs btw
Dr.Brian,a therapist,explains to fifteen-year-old Darcy's parents that Darcy fears his stepmother because most of the fairy tales he heard in his childhood port
what are the coordinates of B if the midpoint of line segment AB is (2, -5) and the coordinates of point A is (4, 4)?
I NEED ANSWERS FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!What is the climate of the eastern coast of Australia?humiddry
what is 2.4 time 3.48
two numbers are in a ratio 2:3 and their sum is 35.find the numbers​
5. SOFTWARE PIRACY in meaning ​
Jose___muchos libros(Trabajar)
Write a declaration for floating-point variable lastVal that’s to retain its value between calls to the function in which it’s defined.
3(x - 7) + 4 = 28 - 2x​