Seudónimo Seudónimo
  • 24-01-2019
  • Mathematics
contestada

!!!URGENT!!!

10 points!


Use substitution to solve the system of equations.


4x+y=0

2y+x=-7

Respuesta :

Cricetus
Cricetus Cricetus
  • 05-08-2019

Answer:

x=1

Step-by-step explanation:

We are given a pair of linear equation in x and y . We have to solve them for x and y using substituting method

first equation:

4x+y=0

y=-4x

Equation second :

2y+x=-7

replacing the value of y in this equation we get

2(-4x)+x=-7

-8x+x=-7

-7x=-7

dividing both sides with -7 we get

x=1

Hence we have x =1 there fore y = -4x

y=-4(1)

y=-4

Answer Link

Otras preguntas

Einstein used the photoelectric effect to prove that light has what?
what connection might exist between global warming and human activities?
Divide £56 in the ratio 5:3
Three eighths divided by six sevenths equal
How can life expectancy and literacy rates affect the quality of labor in the economy?
sandy has $200 in her bank account. if she writes 6 checks for exactly $19.98 , what expression describesmthe change in her bank account? what is her account b
why is the louisiana purchase treaty an important document in the study of manifest destiny
how do you simplify 1/9 divided 2/3
order from least to greatest 0.5, 1/5, 0.35, 12/25, 4/5
Carly spends $5 for n notebooks.Write an algebraic expression represent the cost of one notebook