genitamangur
genitamangur genitamangur
  • 26-04-2017
  • Mathematics
contestada

Use the substitution method to solve the following pair of simultaneous equations.
x+3y=4
y=2x-1

Respuesta :

JohnnysteinR
JohnnysteinR JohnnysteinR
  • 26-04-2017

x + 3y= 4

-2x+ y= -1 (-2x from the other side)

2x+ 6y= 8 (multiply by 2)

-2x+ y= -1

7y =7

y= 1

x+ 3(1)= 4 (you do this to find the y)

x+ 3= 4

x= 1 (-3 from the other side)

x= 1 y=1   (1,1)

Answer Link

Otras preguntas

What is Mercutio’s attitude towards love?
What was the middle passage and why was it called that?
what does poor access to water mean
Three different types of liquids having volumesV1, V2 andV3 and specific gravities S1, S2 and S3 respectively are mixed. If the bulk of the liquid shrinks by 1%
A large boulder is ejected vertically upward from a volcano with an initial speed of 50m/s. Ignore air resistance. A: At what time after being ejected is the bo
Que valores están en el libro fahrenheit 451
Find the a, mean and b. standard deviation for the data set. Round to two decimal places. International Travel Destinations of U.S. Citizens Country U.S. Citize
Essay about Nazi German
E. Answer the questions 1. How many millions are there in 34 567 124? 2. How many thousands are there in 2 904 178? 3. How many hundreds are there in 109 235? 4
Proctor says "God sees my name; God knows how black my sins are!" Explain how this line has two different meanings: what proctor means by it versus what danfort