alohamisskikiki
alohamisskikiki alohamisskikiki
  • 15-11-2016
  • Mathematics
contestada

Solve, using linear combination.
5x + y = 2
4x + y = 4

Respuesta :

michy5 michy5
  • 15-11-2016
5x+y=2
4x+y=4

5x+y=2
-1( 4x+y=2)

5x+y=2
-4x-y=2

your y'all cancel out so you r left with

x=-2
then you plug the x in to one of the equations
5(-2)+y=2
-10+y=2
then add 10 to both sides
y=12

Answer: x = -2 y = 12

there's the work and all its simple you just have to figure out how to get rid of y or x ( which ever is easier) and you can figure it out after that
Answer Link

Otras preguntas

While reading a story, you come across the following sentence: Although Mary was often unfriendly, she established rapport quickly with Jane. By contrasti
(S)-5,5-dibromo-3-fluoro-2-methyl-3-hexanol
Use the data below to answer a, b, & c below (use the insert table function to construct the 2 stem and leaf displays). Don't forget to use a titles and key
How do you start a synopsis?
A cone-shaped building has a height of 11.4 meters and a base with a diameter of 12 meters. The building will be filled with road salt that costs $20 per cubic
which missing side length makes the perimeter , p = 26 feet true?
There is only certain times you can call to get technical support for this computer
I need the answer on the blank need help fast
Which of the following statements is not correct? A.0.20 mole of O2 = 6.4 g B.0.75 mole of H2CO3 = 47 g C.3.42 moles CO = 95.8 g D.4.1 moles Li2O = 94 g
I need help finding sources that support the 4th amendment. Like audio, videos, and graphics.