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umka2103 [35]
3 years ago
15

In a survey, 60% of interviewees say they like beach sports, while 55% like mountain sports. If 20% like both, what fraction of

the interviewees likes neither? Write your answer as a decimal rounding to the next hundredth if needed.
Mathematics
2 answers:
My name is Ann [436]3 years ago
7 0

Answer:

0.05

Step-by-step explanation:

To solve this problem, we first need to calculate the percentage of people that like beach or mountain sports.

This percentage can be calculated with the formula:

P(M or B) = P(M) + P(B) - P(M and B)

where:

P(M or M) is the percentage of people that like beach or mountain sports,

P(B) is the percentage of people that like beach sports,

P(M) is the percentage of people that like mountain sports,

P(B) is the percentage of people that like beach and mountain sports.

Then:

P(M or B) = 0.55 + 0.60 - 0.20 = 0.95

95% of the people like mountain or beach sport. Now, to find the percentage of people that like neither, we just need to make 1 minus the percentage of people that like beach or mountain sports:

P(Neither) = 1 - P(M or B) = 1 - 0.95 = 0.05

0.05 or 5% of the people interviewed like neither of these sports.

solmaris [256]3 years ago
4 0

Answer:

0.05

Step-by-step explanation:

According to the question,a survey took place and 60% of interviewees say they like beach sports, while 55% like mountain sports. If 20% like both, what fraction of the interviewees likes neither?

If 60% of them like beach sports,55% like mountain sports and 20% enjoy both.

With the above information, we need to find the percentages of interviewees that like only beach sports and mountain sports respectively.

Since 60% like beach sports and we know that in that 60% of people,20% also like mountain sports.So the percentage of people that like only beach sports is 60 - 20 = 40%

Do same for mountain sports lovers only and we have 35% of them.

Now we have 40% of beach sports lovers,35% of mountain sports lovers and 20% lovers of both sports.

This percentages gives us a total of 95% and the remaining percentage (5%) do not like either sport.

5/100 of them = 0.05

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raketka [301]
16. 40%。17. 0.8

Addition and subtraction
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Which number would be 16,000 when rounded to the nearest thousand: 15,472 or 15,518 or 16,511 or 16,739?
Anna11 [10]
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Read 2 more answers
What is the inverse of f(x)=x^2+5
Law Incorporation [45]

Answer:

\sqrt{X-5}, -\sqrt{X-5}

Step-by-step explanation:

Replace X with Y

solve for Y; X = Y^2 + 5

subtract 5 from both sides

X - 5 = Y^2

take the square root

Y = plus or minus sqrt(X-5)

sqrt(X-5); -sqrt(X-5)

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2 years ago
Population of fruit flies has a mean life span of 46 days with a standard deviation of 6.2 days. If a sample of 30 fruit flies i
icang [17]
Idk sorry I would answer if I did but I need points to ask a question
7 0
3 years ago
Help please. Just need to answer 29-31 then I’m done. Thanks
Free_Kalibri [48]

Answer:

29. See table below

30. See attached graph

31. The slope is m= 0.10

The slope represent the cost for every additional call minute.

Step-by-step explanation:

The cost is $0.5  first minute and $0.10 for any additional minutes

If c is the total cost of a call that last t minutes then;

c= 0.10t + 0.5-----where t is the time the call lasted

29. Use the equation above to create the table as;

t {x}            c{y}

1                  0.6

2                 0.7

3                 0.8

4                 0.9

5                 1.0

6                 1.1

The graph of this plot is as attached , where the coordinates are

{1,0.6} , {2,0.7} ,{3,0.8} ,{4,0.9} ,{5,1.0}, {6,1.1}

The slope can be found using the formula;

m=Δy/Δx

m= 1.1 - 0.6 / 6-1

m= 0.5 / 5 = 0.10

The slope represent the cost for every additional call minute.

5 0
2 years ago
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