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svlad2 [7]
3 years ago
10

Need help on the 2 questions ASAP and SHOW WORK PLEASE !!!! 50 points ????

Mathematics
1 answer:
zaharov [31]3 years ago
4 0

Answer:

-4 - 8-=-4

Step-by-step explanation:

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Half of the number, n, plus eight?
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Your answer would be A.
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Help with num 9 please. thanks​
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Answer:

See Below.

Step-by-step explanation:

We want to show that the function:

f(x) = e^x - e^{-x}

Increases for all values of <em>x</em>.

A function is increasing whenever its derivative is positive.

So, find the derivative of our function:

\displaystyle f'(x) = \frac{d}{dx}\left[e^x - e^{-x}\right]

Differentiate:

\displaystyle f'(x) = e^x - (-e^{-x})

Simplify:

f'(x) = e^x+e^{-x}

Since eˣ is always greater than zero and e⁻ˣ is also always greater than zero, f'(x) is always positive. Hence, the original function increases for all values of <em>x.</em>

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A pair of shoes costs $25 to make. This means that you need to charge a price of at least ___ just to cover your cost.
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4 years ago
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Find f(−1) given that f(x)=x3+2x2+3x+4. <br>A. 10 <br>B. -2 <br>C. 2 <br>D. -10
Finger [1]

Answer:

The answer is option C

Step-by-step explanation:

f(x) = x³ + 2x² + 3x + 4

To find f(-1) substitute the value of x that's

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We have the final answer as

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4 years ago
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