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3 years ago

14

A chemist is using 359 milliliters of a solution of acid and water. If 19.9% of the solution is acid, how many milliliters of ac

id are there? Round your answer to the nearest tenth

1 answer:

ss7ja [257]3 years ago

7 0

Answer:

Step-by-step explanation:

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kondaur [170]

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3 years ago

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Likurg_2 [28]

Answer:

angle A=30°

Step-by-step explanation:

$9x + 6 + 4x + 6 + 90 = 180 \\ 13x + 102 = 180 \\ 13x = 180 - 102 \\ 13x = 78 \\ \frac{13x}{ 13} = \frac{ 78}{13} \\ x = 6 \\ 4x + 6 = a \\ 4(6) + 6 = a \\ 24 + 6 = a \\ 30 = a$

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faust18 [17]

Answer:

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