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Andreyy89
3 years ago
7

Please help me, I’m Dumb

Mathematics
2 answers:
nasty-shy [4]3 years ago
7 0

Answer:

Choice c is correct.

Step-by-step explanation:

We have  given two functions:

f(x)  = (2x²+ 2)

g(x) = (x²-1)

We have to find (f-g)(x).

(f-g)(x) = ( 2x²+ 2) - ( x²-1)

(f-g)(x) = 2x² + 2 - x²+1

(f-g)(x) = x²+3 is the correct answer.

vova2212 [387]3 years ago
4 0

Answer: OPTION C

Step-by-step explanation:

To solve the exercise shown in the image attached, you need to subtract the functions f(x) and g(x).

Keeping the above on mind, you have:

(f-g)(x)=2x^{2}+2-(x^{2}-1)

You must distribute the negative sign and then you must add the like terms, therefore, you obtain:

(f-g)(x)=2x^{2}+2-x^{2}+1\\(f-g)(x)=x^{2} +3

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By using <em>triangle</em> properties and the law of the cosine twice, we find that the distance between points M and N is approximately 9.8 meters.

<h3>How to determine the distance between two points</h3>

In this problem we must determine the distance between two points that are part of a triangle and we can take advantage of properties of triangles to find it. First, we determine the measure of angle L by the law of the cosine:

\cos L = \frac{(19.6\,m)^{2}-(14.8\,m)^{2}-(21.4\,m)^{2}}{-2\cdot (14.8\,m)\cdot (21.4\,m)}

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MN = \sqrt{(7.4\,m)^{2}+(10.7\,m)^{2}-2\cdot (7.4\,m)\cdot (10.7\,m)\cdot \cos 62.464^{\circ}}

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By using <em>triangle</em> properties and the law of the cosine twice, we find that the distance between points M and N is approximately 9.8 meters.

To learn more on triangles: brainly.com/question/2773823

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