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drek231 [11]
3 years ago
5

Many school districts have a summer vacation that is 72 days long. What percent of the entire year is summer vacation?

Mathematics
1 answer:
damaskus [11]3 years ago
7 0

It is 19.73% because you do 72/365

365 days a year to get the answer

I hope this helps!

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In a certain​ country, the true probability of a baby being a girl is 0.469. Among the next seven randomly selected births in th
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Answer:

The probability is 0.995 ( approx ).

Step-by-step explanation:

Let X represents the event of baby girl,

The probability of a baby being a girl is, p = 0.469,

So, the probability of a baby who is not a girl is, q = 1 - 0.469 = 0.531,

Also, the total number of experiment, n = 7

Thus, by the binomial distribution formula,

P(x)=^nC_x(p)^x q^{n-x}

Where, ^nC_x=\frac{n!}{x!(n-x)!}

The probability that all babies are girl or there is no baby boy,

P(X=7)=^7C_7(0.469)^7(0.531)^{7-7}

=0.00499125661758

Hence, the probability that at least one of them is a boy​ = 1 - P(X=7)

= 1 - 0.00499125661758

= 0.995008743382

≈ 0.995

8 0
3 years ago
Kelly uses cruise control to drive at a constant speed. She travels first 192 miles in 3 hours. At the rate, how long will it ta
ioda

Answer:

Step-by-step explanation:

rate = d / t

rate = 192 / 3

rate = 64 miles / hour

Now you want to know how long it can take to get 448 miles

d = r * t

t = d / r

t = 448/64

t = 7 hours.

You could actually do it using proportions.

192/3 = 448/x                   Cross multiply

192*x = 448*3

192*x = 1344                    Divide by 192

x = 1344/192

x = 7

Do this the way you feel is the best way.

5 0
2 years ago
Read 2 more answers
How do write 2 3/4 as an improper fraction
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11/4 is the mixed fraction of that
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3 years ago
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Immigration reform A news organization wants to know what percent of U.S. residents support a "pathway to citizenship" for peopl
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Undercoverage might lead to bias in this study due to the risk of collecting data from a small number of people who feel strongly about the research study in this scenario.

<h3>What is Undercoverage bias?</h3>

This refers to a type of sampling bias which occurs when the research population aren't adequately represented in the study.

This type of sampling involves getting data from a selected few people who may have the same opinion or view about the study which doesn't depict the true representation of the population.

This makes the study to be biased which is why undercoverage is usually avoided when conducting a research.

Read more about Undercoverage bias here brainly.com/question/13294832

#SPJ1

5 0
1 year ago
Find the slope of the line
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Answer:

-2

Step-by-step explanation:

y =  - 2x

the line is going down meaning its a negative and to find the slope do rise over run

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