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Nataliya [291]
3 years ago
9

Find the difference between 25.6 and 14.07

Mathematics
2 answers:
WINSTONCH [101]3 years ago
6 0

Answer:

25.6-14.07= 11.53

Step-by-step explanation:

igomit [66]3 years ago
3 0

Answer:

11.53

Step-by-step explanation:

25.6-14.07=11.53

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(a) f is increasing at (-\infty,-2) \cup (2,\infty).

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-->> x < -2
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f'(x) \ \textless \  \ 0 \\ \\ \Leftrightarrow 15x^2 - 60 \ \textless \  0 \\ \\ \Leftrightarrow 15(x - 2)(x + 2) \ \ \textless \  0 \\ \\ \Leftrightarrow \boxed{(x - 2)(x + 2) \ \textless \  0} \text{ (2)}

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f''(x) = 30x - 60

Using the similar computation in (c), 

f''(x) \ \textless \  0 &#10;\\ \\ \Leftrightarrow 30x - 60 \ \textless \  0 &#10;\\ \\ \Leftrightarrow 30(x - 2) \ \textless \  0 &#10;\\ \\ \Leftrightarrow x - 2 \ \textless \  0 &#10;\\ \\ \Leftrightarrow \boxed{x \ \textless \  2}

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