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Inga [223]
3 years ago
9

What is the probability that someone in the survey considered reading books or surf the internet as the best entertainment?

Mathematics
2 answers:
Elis [28]3 years ago
5 0

Answer:

Answer is \frac{31}{100}

Step-by-step explanation:

values given in table



Reading books percentage is 22

hence we can write probability as

Probability (reading books) = \frac{22}{100}

percentage of surfing internet is= 9

Probability  of surfing internet is =\frac{09}{100}

the probability (reading books or surf the internet)= P(reading books) + P(surf the internet)

probability (reading or surf)=  \frac{22}{100}+\frac{09}{100}

=\frac{31}{100}

mr Goodwill [35]3 years ago
3 0

Answer:

31/100

Step-by-step explanation:

From the given table

Reading books percentage is 22

so Probability (reading books) = \frac{22}{100}

Surf the internet percentage is 9

Probability (surf the internet) =\frac{9}{100}

the probability (reading books or surf the internet)= P(reading books) + P(surf the internet)

probability (reading or surf)=  \frac{22}{100} +\frac{9}{100}

=  \frac{31}{100}



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Part 1

<h3>Answer:   13</h3>

---------------------

Explanation:

We'll replace every copy of x with -3. Then use PEMDAS to simplify.

f(x) = -2x+7

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f(-3) = 6+7

f(-3) = 13

===========================================================

Part 2

<h3>Answer:  -11</h3>

---------------------

Explanation:

We work backwards in a sense compared to what part 1 did. Instead of finding f(x) based on x, we determine what x must be for a given f(x).

We'll replace f(x) with 29 and solve for x like so

f(x) = -2x+7

29 = -2x+7

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Note how if you replaced x with -11, we'd get,

f(x) = -2x+7

f(-11) = -2(-11)+7

f(-11) = 22+7

f(-11) = 29

which helps confirm we have the correct answer.

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