Mathematics, 18.03.2021 02:00 tony001
A pharmacist was wondering:
How many liters of a 70% alcohol solution must be added to 10 liters of a 40% alcohol solution to produce
a 50% alcohol solution?
Answers: 3
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The value of x in this system of equations is 1. 3x + y = 9 y = –4x + 10 substitute the value of y in the first equation: combine like terms: apply the subtraction property of equality: apply the division property of equality: 3x + (–4x + 10) = 9 –x + 10 = 9 –x = –1 x = 1 what is the value of y?
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A pharmacist was wondering:
How many liters of a 70% alcohol solution must be added to 10 liters of...
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