Seudónimo Seudónimo
  • 18-04-2018
  • Mathematics
contestada

plz help
and no guessing

plz help and no guessing class=

Respuesta :

choixongdong
choixongdong choixongdong
  • 18-04-2018
multiply 1st equation by 5
-5x + 10y = -20

now you have
-5x + 10y = -20
 5x - 10y = 20
---------------------add
 0 + 0 = 0
0 = 0

answer
C. the system has infinitely many solutions
Answer Link
Bladerunner1976
Bladerunner1976 Bladerunner1976
  • 18-04-2018
When I multiply the top equation by 5 I get the following system:
-5x + 10y = -20
5x - 10y = 20

Add them together you then get 0 = 0.  Since 0 always equals 0 then the system will have infinitely many solutions
Answer Link

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