ashley10142002otz3t8 ashley10142002otz3t8
  • 18-11-2017
  • Mathematics
contestada

Solve this linear system. 2.4 = 0.3 x + 0.4y 5x = 2 + 6y

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Piinoy
Piinoy Piinoy
  • 18-11-2017
[tex] \left \{ {{2.4 = .3x + .4y} \atop {5x = 2 + 6y}} \right. [/tex]

5x = 2 + 6y
Divide both sides by 5
x = 6/5y + 2/5

Input in the other equation.

2.4 = .3(6/5y + 2/5) + .4y
2.4 = .36y + .12 + .4y
2.4 = .76y + .12
Subtract .12 from both sides.
2.28 = .76y
Divide both sides by .76
3 = y

x = 6/5(3) + 2/5
x = 18/5 + 2/5
x = 20/5 = 4

(4, 3)
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bh0742901
bh0742901 bh0742901
  • 19-02-2021

Answer:

number 7 kids

Step-by-step explanation:

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