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2 years ago

Please help me taking a test

Mathematics

1 answer:

Paladinen [302]2 years ago

5 0

Answer: the one that ends with 30. D the fourth one

Step-by-step explanation:

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Why is f(x)=0 the only odd and even function?

kupik [55]

F is odd if and only f f(-x) = -f(x) so f(x) = 0 works because 0 = 0 always.

f is even if and only if f(-x) = f(x) so f(x) = 0 works because there's no x term so nothing changes. 0 = 0.

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3 years ago

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Find the three arithmetic means between -5 and -25.

inn [45]

The answer you are looking for is: -15.
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3 years ago

The angle of elevation to the top of a skyscraper is measured to be 2 degrees from a point on the ground 1 mile from the buildin

Alex

Answer:

0.034921 miles or 1843774 feet tall

Step-by-step explanation:

Using trigonometric functions we know that $x=rcos(\theta)$ and $y=rsin(\theta)$ where $\theta$ =angle and r is the hypotenuse of the triangle.

First we will calculate the hypotenuse using the x equation, since we know x = 1 mile (distance from the building on the ground) we have:

$x=rcos(\theta)\\\\1=rcos(2)\\\\r=\frac{1}{cos(2)} \approx. 1.0061mi$

Now we will calculate the height of the building using the y equation and so:

$y=rsin(\theta)\\\\y=\frac{1}{cos(2)} \times sin(2) = \frac{sin(2)}{cos(2)}=tan(2)=0.034921mi$

The building is 0.034921 miles or approximately 184.3774 feet tall.

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2 years ago

Which measure of center is the most appropriate for the data in Table 1 (Height) in Task 1? Give a reason for your answer.

Zigmanuir [339]

This isn’t an answer but we gotta see the question to answer it ☠️☠️

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1 year ago

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Help if you can -

yulyashka [42]

Answer:

1.875 commercials a minute

Step-by-step explanation:

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