henriqueloborocha10 henriqueloborocha10
  • 23-01-2015
  • Mathematics
contestada

2x + 2y = 28
8x - 2y= 22

system of equations

2x 2y 28 8x 2y 22 system of equations class=

Respuesta :

alexamariemg alexamariemg
  • 23-01-2015
eliminate one of the variables..

2x + 2y = 28

2x = -2y + 28


8x - 2y= 22

8x = 2y + 22
x = 0.25y + 2.75

combine equations...

-y +14 = 0.25y + 2.75

solve for the variable..

-y - 0.25y = 2.75 - 14
-1.25y = -11.25
y = 9

replace y with 9 in previous equation..

x = -y + 14
x = -9 + 14
x = 5

so y = 9 and x = 5

I hope I did that right good luck!
Answer Link

Otras preguntas

why are some elements stable on their own while others are more stable in compounds
how do you use manacles in a sentence? I
what is the unit rate in dollars per hour if u have 1/2 hour equals $1.25?
Which sentence uses all its subject pronouns correctly? A. Ronald and they are growing vegetables in the backyard. B. Her and me decorated the house for the
what is the answer for 2.25t+5=13.5t+14
what effects on sectionalism did the industrial revolution have?
What is the difference between monotheism and polytheism? A. Monotheism is the belief that god can be cruel. Polytheism is the belief that god is all forgivin
The process that releases energy from food in the presence of oxygen is ?
The factor that affects how easily an electron can be removed from an atom is the A. surrounding atoms. B. temperature of the environment. C. size of the atom.
Stephanie had 7/8 pound of bird seed she used 3/8 pound to fill a bird feeder