camilajune6969 camilajune6969
  • 04-09-2020
  • Mathematics
contestada

If y = 3x and 2x + 4y = 12, then 2x + 4(3x) = 12

Respuesta :

cvinta cvinta
  • 08-09-2020

Answer:

x=6/7 and y=18/7

Step-by-step explanation:

If y = 3x and 2x + 4y = 12,

then substitute the value of y with 3x

2x + 4(3x) = 12

2x+12x=12

14x=12

x=12/14=6/7

y=3x=3*(6/7)=18/7

Answer Link

Otras preguntas

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
Scarcity is the condition of not having enough goods and services to satisfy everyone's?
find an equivalent expression without parentheses -(50x-15y+15)=
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?
(10y^3+20y^2+55y)/5y
find an equivalent expression without parentheses -(50x-15y+15)=
Scarcity is the condition of not having enough goods and services to satisfy everyone's?
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?
Prove that (x^5)-(x^2)+2x +3=0 has at least one real root. Prove that x=cosx has at least one solution.