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Alecsey [184]
3 years ago
11

Pure acid is to be added to a 10​% acid solution to obtain 21 L of a 40​% acid solution.

Mathematics
1 answer:
Mazyrski [523]3 years ago
3 0

7 gallons of pure acid and 14 gallons of 10% acid

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Find sin θ if cos θ = 4/7 and θ in quadrant IV.
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Answer:

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Step-by-step explanation:

Using the trigonometric identity

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Since Θ is in the fourth quadrant then sinΘ < 0

Given

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y = (x + 1)² - 1

Step-by-step explanation:

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