miaowla miaowla
  • 04-03-2019
  • Mathematics
contestada

8X +6Y+4
Y=-3X+9
using substitution what numbers are the variables X and Y

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 04-03-2019

Answer:

(5,6)

Step-by-step explanation:

8X +6Y=4

Y=-3X+9

Substitute the second equation into the first.  Every place you see y put -3x+9)

8x +6(-3x+9)=4

Distribute

8x-18x +54 = 4

Combine like terms

-10x +54 = 5

Subtract 54 from each side

-10x +54-54=4-54

-10x = -50

Divide by -10

-10x/-10 = -50/-10

x= 5

Now we need to find y

y = -3x+9

y = -3(5) +9

y = -15+9

y= 6

(5,6)

Answer Link

Otras preguntas

Find the slope of each line. through (-2,7) and (4,1)
What literary or rhetorical device is Welty using to make her a trustworthy narrator? pathos in showing her mother trying to whistle personification of the Vict
What does lady Macbeth say to cover for her husbands hallucination?
What three groups were involved in the boer war? Why was the war fought ?
what specific sacred writings describe the life and teachings of jesus
What information in lines 1-17 helps you understand the motivation for the boycott
what is the Photic zone?
why was south carolina established as a colony? a) it was a link between england, the west indies, and the colonies b) it’s founder wanted a place for religious
oxygen is inhaled and is then distibuted throughout the bloodstream is what two body systems?​
PLEASE HELP 10 POINTS