tpresson tpresson
  • 23-01-2015
  • Mathematics
contestada

system of equations,

3x - 6y =2

5x + 4y = 1

Respuesta :

logo88
logo88 logo88
  • 23-01-2015
3x-6y=2 (label equation 1)
5x+4y=1 (label equation 2)
-6y=-3x+2 (rearranged equation 1)
y=1/2x-1/3 (label equation 3)
 substitute equation 3 into equation 2 
5x+4(1/2x-1/3)=1
5x+2x-4/3=1
15x+6x-4=3 (multiplied everything by 3)

21x-4=3
     +4  +4
21x=7
x= 7/21
x=1/3

sub x=7/21 into equation 3
y= 1/2(1/3) -1/3
y= -1/6


Therefore x=1/3 and y= -1/6



Answer Link

Otras preguntas

Why do hikers attempt to climb Mount Everest only during a two-week period each year?
Drag and drop the answers into the boxes to correctly complete the statement. A sequence of transformations that maps △ABC to △A′B′C′ is a ___________ followe
Article 29 of the magna carta establishes the concept of a) freedom of speech. b) due process of law. c) freedom of religion. d) freedom of petition.
Once you have come to a decision, you should "go" over it and __________.
What is the radius for the circle given by the equation? (Please help gmanyp)
Help help pleaseeee
Governments collect taxes to ensure thatthere is sufficient money to fund private businesses.citizens contribute to meeting society's needs.politicians get paid
when did the christian calender get introduced in rome
Some philosophers believe morality can be determined by observing the world around you. What is this philosophy called?
Idk the answer can u help me