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irga5000 [103]
3 years ago
13

What is the surface area of the cylinder? 14ft length 9ft height

Mathematics
1 answer:
Alina [70]3 years ago
6 0

Answer:

C

Step-by-step explanation:

I am assuming the top and bottom are closed.

Surface are = area of the curved side + 2 * area of the top

=  9* 14 * π + 2 * π * 7^2

= 126π + 98π

= 224π ft^2

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The lengths of nails produced in a factory are normally distributed with a mean of 4.84 centimeters and a standard deviation of
Helga [31]

Answer:

Top 3%: 4.934 cm

Bottom 3%: 4.746 cm

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 4.84, \sigma = 0.05

Top 3%

Value of Z when Z has a pvalue of 1 - 0.03 = 0.97. So X when Z = 1.88.

Z = \frac{X - \mu}{\sigma}

1.88 = \frac{X - 4.84}{0.05}

X - 4.84 = 0.05*1.88

X = 4.934

Bottom 3%

Value of Z when Z has a pvalue of 0.03. So X when Z = -1.88.

Z = \frac{X - \mu}{\sigma}

-1.88 = \frac{X - 4.84}{0.05}

X - 4.84 = 0.05*(-1.88)

X = 4.746

8 0
3 years ago
Please help I only have about a few minutes!
Gnoma [55]

Answer:

i want to say the answer is C, i'm sorry if its incorrect, but i'm 50/50 that its C

5 0
2 years ago
Eight more than three times a number is 32
NemiM [27]

Answer:

3 times 8 = 24  + 8 = 32

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Use long division to determine the quotient of the polynomials. (x3 – 7x – 6) ÷ (x – 4) Which of the following options best desc
Lelechka [254]

Answer:

The correct option is c.

Step-by-step explanation:

The quotient of the polynomials is

\frac{(x^3-7x-6)}{x-4}

We need to find the remainder by using long division method.

The dividend of the given expression is

Dividend=x^3-7x-6

Divisor=x-4

The long division method is shown below.

\frac{(x^3-7x-6)}{x-4}=(x^2+4x+9)+\frac{30}{x-4}

From the below attachment it is clear that the quotient has a remainder of 30. Therefore, the divisor is not factor of the dividend.

Therefore the correct option is c.

4 0
3 years ago
-4x4+1.5-2.5-2x4-6.5
nekit [7.7K]

Answer:

0.5

please mark me as Branliest

4 0
3 years ago
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