millerluke millerluke
  • 02-10-2020
  • Mathematics
contestada

Solve the system by substitution.
3x +2y=-21
x+y=-9

Respuesta :

Ukmmmmm
Ukmmmmm Ukmmmmm
  • 02-10-2020

Answer:

Step-by-step explanation:

3x +2y=-21  and x+y=-9

3x +2y=-21  and x = -9-y

=> 3(-9 - y) + 2y = -21

-27 -3y + 2y = -21

-y = 6

y= -6

=> x = -9+6= -3

Answer Link

Otras preguntas

What does the narrator allude to at the end of this sentence from Mark Twain's "The 1,000,000 Bank-Note"? "So I loved her all the more, seeing she could be so c
Plz help!!!! With math!!
What should be the guiding factor for a designer when using colors in a garment?
What caribbean countries have refugees come?
I really need help with these and my dad said the way i originally did it was wrong.
What is the name of the cell organelle that is shaped like a flattened disc, contains stroma and stacks of thylakoids, and is the site of photosynthesis?
1. If a pea plant’s alleles for height are tt, what is true of its parents? (1 point) A.) Both Parents are tall. B.)Both parents are short. C.)Both parents cont
what is the difference between "general will" and "individual will"? why does Rousseau claim the general will is always good?
solve the equation 4+0.3x=19
What type of crop plantations proved to provide slaves with the worst living conditions?