debrahbridges debrahbridges
  • 20-03-2017
  • Mathematics
contestada

what is0.4x - 0.1y = 2

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fasefweq fasefweq
  • 20-03-2017
To solve the set of equations given above, we can use the substitution method where we substitute one equation to the other and solving for one variable. We do as follows:

0.4x - 0.1y = 2
x = 5 + 0.25y

0.2x + 0.5y = 1
0.2(5 + 0.25y)+ 0.5y = 1
y = 0
x = 5

Therefore, the correct answer from the choices is option A, (5,0).
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mayasiegel03 mayasiegel03
  • 20-03-2017
if you want to isolate y then: y=-20+4x

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