anonymous
  • anonymous
2. For her chemistry experiment, Marisol needs 2 liters of a 50% alcohol solution. The lab has two containers, one with 40% alcohol solution and the other with 80% alcohol solution. i cant figure out the linear equations
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
x+y=2 given 40% alcohol and 80% alcohol solution we would then have .4x+.8y=1
anonymous
  • anonymous
ok thank you i had that same answer i just wasn't sure if it was right :)
anonymous
  • anonymous
Anytime!

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anonymous
  • anonymous
so would x and y both equal 1? @reeses
anonymous
  • anonymous
its a system of equations so solve for x for one equation and plug it into x for the other equation then the value get for x you plug it back into the first equation then solve for y :)
Victoriasushchik
  • Victoriasushchik
Let the amount of 40% solution be a and 80% solution b. so, 0.4a + 0.8b = 0.5(a + b) Now, a + b = 2 => 0.4a + 0.8(2 - a) = 0.5(2) i.e. 1.6 - 0.4a = 1 so, 0.4a = 0.6 => a = 1.5 and b = 0.5 Hence, 1.5 litres of 40% solution needs mixing with 0.5 litres of 80% solution to give a 2-litre, 50% solution :)>
denisaboichuk
  • denisaboichuk
1.5 and 0.5

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