dezariaspencer dezariaspencer

02-05-2018
Mathematics

contestada

solve the system using the substituion method
-4x+y=8
x-3y=9

Respuesta :

nilbert nilbert

02-05-2018

Hi there!

x - 3y = 9
x = 9 + 3y

-4x + y = 8
-4(9+3y) + y = 8
-36 - 12y + y = 8
-36 - 11y = 8
-11y = 44
-y = 4
y = -4

x - 3y = 9
x - 3(-4) = 9
x + 12 = 9
x = 21

So, your answers are y = -4 and x = 21.

Hope this helps!

Answer Link

Otras preguntas

how is mass transit in cities a possible solution tk urban air pollution?

Find Domain of the functionsquare root of (x-8)/x(x-9)

Prove that (x^5)-(x^2)+2x +3=0 has at least one real root. Prove that x=cosx has at least one solution.

how is mass transit in cities a possible solution tk urban air pollution?

Historians of china have traditionally dated the beginning of Chinese civilization to the founding of the what??

Can someone use the word delta in a sentence

Marika and Freddy sold 70 homes for Ron Realty. If Marika sold 2.5 times as many homes as Freddy, how many homes did each sell?

Can someone use the word delta in a sentence

Data are drawn from a symmetric and bell shaped distribution with a mean of 120 and a standard deviation of 5. There are 900 observations in the data set. What

Find Domain of the functionsquare root of (x-8)/x(x-9)