Mathematics: Solve pls will give BRAINLIEST

Solve pls will give BRAINLIEST - id6888400, maxicanofb0011

Ответ:

roscoe53

18.06.2020

$- 3 \frac{6}{7}$

Step-by-step explanation:

$f(x) = \frac{3}{x + 2} - \sqrt{x - 3} \\ plug \: x = 19 \\ f(19) = \frac{3}{19 + 2} - \sqrt{19- 3}\\ f(19) = \frac{3}{21} - \sqrt{16} \\ f(19) = \frac{1}{7} - 4 \\ f(19) = \frac{1 - 4 \times 7}{7 } \\ f(19) = \frac{1 - 28}{7 } \\ f(19) = \frac{ - 27}{7 } \\ f(19) = - 3 \frac{6}{7}$

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Ответ:

natalie2sheffield

05.09.2020

Mathematics

4 workers= 3 hours
1 worker = 12 hours
6 workers = 2 hours
Answer is 2hours

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Solve pls will give BRAINLIEST

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