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liraira [26]
3 years ago
11

Pls pls help it's really urgent!!!!​

Mathematics
1 answer:
Kobotan [32]3 years ago
6 0

Answer: disregard my previous answer, it was incorrect, looking for right one right now

(you can delete this if you want)

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How many liters of water should be added to 18 liters of a 14% bleach solution so that the resulting solution contains only 10%
KiRa [710]

18 liters of 14% bleach contains 0.14×18 = 2.52 liters of bleach.

Adding x liters of pure water to the solution increases the total volume to 18+x liters without changing the total amount of bleach.

To end up with a 10% bleach solution, we must add

\dfrac{2.52}{18+x} = 0.10 \implies 2.52 = 1.8 + 0.10x \implies 0.10x = 0.72 \implies x=\boxed{7.2}

liters of water.

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-3=2-5\implies -3\mod5=2\mod5

When taking a polynomial modulo n, you reduce its terms' coefficients modulo n, so that, in conjunction with the result above,

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For completeness, the linear term's coefficient should also get reduced in the same way as the constant term, so that

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3 years ago
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4 years ago
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