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

A toaster has four slots for bread. Once the toaster is warmed up, it takes 35 seconds to make 4 slices of toast, 70 seconds to make 8 slices, and 105 seconds t
A survey of eating habits showed that approximately 4​% of people in a certain city are vegans. Vegans do not eat​ meat, poultry,​ fish, seafood,​ eggs, or milk
find the solution by graphing or from the graph y=x2-2x-8 how do you do this?
What type of heat transfer occurs when particles bump into each other? A.Convection B.Insulation C.Thermal Conduction D.Thermal Radiation
y=3(8/9)x find y intercept
The purpose of writing a resume is to get a job. True or false.
which of the following men was not a member of the bourbon triumvirate
Line jk passes through points j(-4,-5) and k(-6,3). What is the value of b
I need the answer to these 3 questions
How does an increase in the amount of charge on an object affect the electric field strength created by the object?