kani51
kani51 kani51
  • 04-03-2020
  • Mathematics
contestada

Use substitution to solve the system

2y - 8 = x

2x + 3y = -2

Respuesta :

dannielle
dannielle dannielle
  • 04-03-2020

Answer:

x=2y-8

We use the substitution of x in the second equation

2*(2y-8)+3y= -2

4y-16+3y=-2

7y-16= -2

7y= -2 +16

7y=14

y=14Ș7

y=2

so x= 2*2 -8

    x=4-8

    x=-4

the solution is  (x,y)=(-4, 2)

Step-by-step explanation:

Answer Link

Otras preguntas

What is the product of (x+1) and (2x^2+3x-1)?
How can b^2+9b+14 be re-written?1) (b+7) (b-7)2) (b-7) (b-2)3) (b+7) (b-2)4) (b+7) (b+2)
The following statements about carbon dioxide are true EXCEPT a. It can be prepared by the action of acid on CaCO₃ b. It is used in fire extinguishers c. It d
Many colonial people volunteered to fight for the Allied forces because they hoped their service would win their colony's ____
How many heart chambers does a shark have?
what colors are birds are attracted 2
which inequality is equivalent to 7x-2y> 8. A) y> 7/2x+8 b) y>-2/7x+8/7 c) y <7/2x-4 d) y <-2/7x-4/7 (whats a Inequality? )
Over what period of time would you expect to see large changes in mountains,canyons,and similar features of the earth?
which expression is equivalent to x^4-y^4?
why did  the volcano explode