Ldemeter Ldemeter
  • 04-06-2018
  • Mathematics
contestada

Solve a system of equations algebraically.

x + y = 3
3x - 2y = 4

Respuesta :

yellowyarn2003 yellowyarn2003
  • 04-06-2018
x + y = 3
x = -y + 3

3(-y + 3)  - 2y = 4
-3y + 9 - 2y = 4
-5y = -5
y = 1

x + 1 = 3
x = 2

x = 2, y = 1
Answer Link
zcanty05 zcanty05
  • 04-06-2018
One way to figure this out or to solve this is:

x=2
y=1

x+y=3
2+1=3

3x-2y=4
3 multiplied by 2= 6
2 multiplied by 1=2
6-2=4
3 times 2 minus 2 times 1 equals 4

Hope this helps!
Answer Link

Otras preguntas

You are betting on a game with an expected value of -$0.33. What does this mean?
boron& molybdenum are essential nutrients classified as: a) cofactors,b) antioxidants,c) major minerals,d) trace minerals​
The box plots show the weights, in pounds, of the dogs in two different animal shelters. Weights of Dogs in Shelter A 2 box plots. The number line goes from 6 t
perpendicular to the line y =6 - 3x; passes through (-3, -1)
A velocity-time graph can give you A. Displacement of the moving object B. Acceleration, displacement, and velocity. C. Velocity of the moving object D. Acceler
what is the value of v2 below in the series circuit.​
work out the size of resistance.​
1. How is energy released from most fossil fuels? a) By burning it. b) By storing into the water. c) By crushing it. d) By steaming it. e) All of the above​
What's the primary way that fungi spread and reproduce on Earth?
When molten magma cools ________ under the surface, it forms _________ igneous rocks. A. rapidly, extrusive B. slowly, extrusive C. rapidly, intrusive D. slowly