Dan wants to determine the number of liters of a 20% acid cleaning solution that he should combine with an 80% acid cleaning solution to create 50 liters of a 60% acid cleaning solution.
Part A
Let z represent the number of liters of the 20% acid cleaning solution. Which equation represents this situation?
0.6(50) = 0.22 +0.87
0.23 +0.8(50 - 2) = 0.6(50)
0.6(50) = 0.2x + 0.8(x - 50)
0.22 + 0.8(2 + 50) = 0.6(50)
Part B
How many liters of the 20% acid cleaning solution should Dan use? Round your answer to the nearest tenth of a liter.
Dan should use
liters of the 20% acid cleaning solution

b) the dogs need to shift their focus to human scent.

the answer is thin because within context, the stanza concludes the and frail tone the people have toward each other, and the fact that it would be thin, makes the most sense compared to "pliable" or "not hard or firm to the touch". hope this , good luck.

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whose power in the senate is equal to the power of the speaker of the house?

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one of the most important purposes of surface treatment is to alter surface properties according to the requirement of specific applications. for example, hydrophobic coating has been utilized on windshield and eyeglasses. gold atom monolayer on substrate has become a popular surface bioconjugation strategy.