benstelly2830 benstelly2830
  • 02-05-2017
  • Mathematics
contestada

For the following system, use the second equation to make a substitution for y in the first equation. 2x + y = 5 y + 3 = 2x

Respuesta :

moshift1 moshift1
  • 02-05-2017
If y equals 2x - 3 in the second equation, than subsitute it in for y in the first.
2x + 2x - 3 = 5
4x - 3 = 5
4x = 8
x=2
2(2) + y = 5
x = 2 and y = 1

Answer Link
mesqueda85
mesqueda85 mesqueda85
  • 02-05-2017
For the second equation, y=2x-3. Substituting this in, you get 2x+2x-3=5. Add the 2x's (4x), and add 3 to the 5 (8). You should get 4x=8, which will give you x=2.  
Answer Link

Otras preguntas

What reasons can Hannah use to support her claim? Select two options. The danger is that protection will turn into censorship, eroding our constitutional right
Which team is chip expected to be drafted
1)Organisms don’t all reproduce the same way. However, by comparing the ____ of these organisms, many similarities between them are A)Cells B)Embryos C)Mode of
Find the difference of 128.04 - 8.287.
What processes in the transparency release carbon dioxide into the atmosphere
Which equations have infinitely many solutions? MORE THAN ONE x-3x=-2x+4 x-1/3(3x)=0 1/3x-3=4+2x 3x+2-1/3(3x)=2+2x x-1/3x+2=0
Use the function f(x) = -3x^2+13x+3 to find x when f(x) = -7
Help me out with this please
how do I solve for g. 3g = W
According to NUMBER which ending does not belong? am um o is