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Verdich [7]
3 years ago
10

If f(x)=4x^2+1 and g(x) =x^2-5 find (f-g)(x)

Mathematics
1 answer:
docker41 [41]3 years ago
6 0

Answer:

\huge\boxed{(f-g)(x)=3x^2+6}

Step-by-step explanation:

(f-g)(x)=f(x)(x)\\\\\text{substitute}\ f(x)=4x^2+1\ \text{and}\ g(x)=x^2-5\\\\(f-g)(x)=(4x^2+1)-(x^2-5)=4x^2+1-x^2-(-5)=4x^2+1-x^2+5\\\\\text{combine like terms}\\\\(f-g)(x)=(4x^2-x^2)+(1+5)=3x^2+6

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3 years ago
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5 0
3 years ago
A researcher for an airline interviews all of the passengers on five randomly selected flights.
antoniya [11.8K]

Answer

Cluster sampling. See explanation below.

Step-by-step explanation:

For this case they not use random sampling since we are selecting people from flights. Because we select just 5 random flights.

Is not stratified sampling since we don't have strata clearly defined on this case, and other important thing is that in order to apply this method we need homogeneous strata groups and that's not satisfied on this case.

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6 0
3 years ago
Plz answer quickly will mark brainless
den301095 [7]

Answer:

She must read more than 5 hours

Step-by-step explanation:

equation 12h+10>70

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h>5

So she must read more than 5 hours

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5 0
3 years ago
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inn [45]

Answer:

The second one would be the answer.

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Feel free to let me know if you need more help. :)

5 0
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