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3 years ago

Which statement best describes how to determine whether f(x) = x3 + 5x + 1 is an even function?

Mathematics

2 answers:

Juli2301 [7.4K]3 years ago

8 0

The answer is B) Determine whether (–x)^3 + 5(–x) + 1 is equivalent to x^3 + 5x + 1

seraphim [82]3 years ago

7 0

Let f(x) be the real value function. Remember that:
→ Even: f(x) = f(-x) → Odd: -f(x) = f(-x)
If -f(x), then -f(x) = -x³ + 5x If x = -x, then f(-x) = -x³ + 5x
Since -f(x) = f(x), the function is therefore odd.

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Dmitrij [34]

Answer: $\bold{b)\quad \dfrac{17}{36}}$

Step-by-step explanation:

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3 years ago

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lesya [120]

Answer:

Step-by-step explanation:

First of all, I think it was "respectively", not "respecfully", =))). A noticeable point.

From the problem, three item's costs are represented by three consecutive even integer.

Thus, we can call cost of spoiler is x, sunroof is x-2, stereo is x + 2. It is conditioned that x is an even number.

Since the sum of the three is 48, we have

(x-2) + x + (x+2) = 48

x+x+x -2 +2 = 48

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x=16

So the spoiler is 16; thus, the sunroof is 14 and the stereo is 18

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3 years ago

What is 7 less than the difference between j and 4

DochEvi [55]

Answer:

(j - 4) - 7

Step-by-step explanation:

[] Underlined means that part of the sentence was turned into an expression in the next step

what is 7 less than the difference between j and 4

what is 7 less than the (j - 4)

(j - 4) - 7

Have a nice day!

I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

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Answer:

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