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2 years ago

6

There are 5,000 books in the town's library. Of these,4,400 are fiction. To find the percent of the books that are fiction, f

irst set up the percent equation. Then find the percent. Setup the percent equation. Choose the correct answer below. A. m B. m C. m Your answer is not correct.D. m This is the correct answer. nothing% of the books are fiction

2 answers:

RoseWind [281]2 years ago

6 0

Answer:

4,400=m•5,000 and 88%

slega [8]2 years ago

4 0

Ok so the answer her is actually surprising but it is OH YES DADDY

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Rachel has a drawing that measures 4 inches in length and 6 inches in width. She wants to enlarge the drawing to fit on a poster

seropon [69]

Answer:

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Step-by-step explanation:

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2 years ago

Suppose that 3\%3%3, percent of over 200{,}000200,000200, comma, 000 books borrowed from a library in a year are downloaded. The

sleet_krkn [62]

Answer:

The mean of the sampling distribution of the proportion of downloaded books is 0.03 and the standard deviation is 0.0197.

Step-by-step explanation:

Central Limit Theorem

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean $\mu = p$ and standard deviation $s = \sqrt{\frac{p(1-p)}{n}}$

3% of books borrowed from a library in a year are downloaded.

This means that $p = 0.03$

SRS of 75 books.

This means that $n = 75$

What are the mean and standard deviation of the sampling distribution of the proportion of downloaded books

By the Central Limit Theorem

Mean: $\mu = p = 0.03$

Standard deviation: $s = \sqrt{\frac{p(1-p)}{n}} = \sqrt{\frac{0.03*0.97}{75}} = 0.0197$

The mean of the sampling distribution of the proportion of downloaded books is 0.03 and the standard deviation is 0.0197.

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2 years ago

What are the x-intercepts of the function f(x) = –2x2 – 3x + 20?

Hatshy [7]

The root sof this quadratic equation are -4 and 2.5.

The roots of any quadratic can be found by using the quadratic equation. The equation is below for you.

$\frac{-b +/- \sqrt{b^{2}- 4ac}}{2a}$

In this equation you use the number attached to x^2 as the a, which in this case is -2. The number attached to x as b, which is in this case -3. And the number at the end as c, which is 20. From there you solve for the answers.

$\frac{3 +/- \sqrt{-3^{2}- 4(-2)(20)}}{2(-2)}$

$\frac{3 +/- \sqrt{9 + 160}}{-4}$

$\frac{3 +/- 13}}{4}$

Now you separate and get the two separate answers. First the positive.

$\frac{3 + 13}}{4}$

$\frac{16}}{4}$

4

Now the negative

$\frac{3 - 13}}{4}$

$\frac{-10}}{4}$

-2.5

5 0

2 years ago

Read 2 more answers

If f'(x)=2/x and f(sqrt(e))=5, then f(e)=

docker41 [41]

$f'(x)=\dfrac2x$
$\implies f(x)=\displaystyle\frac2x\,\mathrm dx=2\ln|x|+C$

$f(\sqrt e)=5\implies 5=2\ln|\sqrt e|+C$
$\implies 5=\dfrac22\ln e+C$
$\implies C=4$
$\implies f(x)=2\ln|x|+4$
$\implies f(e)=2\ln|e|+4=6$

3 0

2 years ago

two rulers and one pencil cost £2.40 five rulers and one pencil cost £5.10 work out the cost of a ruler and the cost of a pencil

Thepotemich [5.8K]

Answer:

Ruler: £0.90

Pencil: £0.60

Step-by-step explanation:

Ruler = x

Pencil = y

2x + y = 2.4

5x + y = 5.1

3x = 2.7

x = 0.9

y = 0.6

3 0

2 years ago