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3 years ago

7

Find the volume of a cylinder with a diameter of 10 inches and a height that is three times the radius. Use 3.14 for pi and roun

d your answer to the nearest hundredth. (Hint: You may only enter numerals, decimal points, and negative signs in the answer blank)

1 answer:

Anna71 [15]3 years ago

4 0

Answer:

Cylinder volume:

$\pi {r}^{2} h = volume$

Hence: 3.14 × (5)^2 × 15
V= 1178.1

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A population consists of 500 elements. We want to draw a simple random sample of 50 elements from this population. On the first

serious [3.7K]

Answer: correct option is A

0.100

Step-by-step explanation:

Given that

population = 500 elements.

To draw a simple random sample of 50 elements from this population. On the first selection

The probability = 50/500 = 0.1

The probability of an element being selected is 0.100

3 0

3 years ago

Find the perimeter of the figure below. Notice that one side length is not given.

olganol [36]

Answer:

48 cm

Step-by-step explanation:

The perimeter of the figure is the sum of the lengths of its sides.

Find the length of the unknown side

Let the unknown length be x cm.

Notice that the sum of the lengths of the unknown side and the side measuring 5 cm I equal to the length of the side measuring 9 cm.

x +5= 9

<em>Subtracting 5 from both sides:</em>

x= 9 -5

x= 4

Add up the lengths of all of the sides to find the perimeter. I will add the lengths starting from the side measuring x cm (or 4 cm), and sum them up in a clockwise manner. This ensures that none of the sides are overlooked.

Perimeter of the figure

= 4 +15 +9 +7 +5 +8

= 48 cm

Additional:

For more about perimeter of figures, do check out the following!

brainly.com/question/11957651

6 0

2 years ago

Nadia wants to estimate the mean driving range for her company's new electric vehicle. She'll sample vehicles and measure each o

Andrew [12]

Using the z-distribution, it is found that the smallest sample size required is given by:

B) 7 vehicles.

<h3>What is the margin of error for a z-distribution confidence interval?</h3>

It is given by:

$M = z\frac{\sigma}{\sqrt{n}}$

In which:

z is the critical value.

$\sigma$ is the population standard deviation.

n is the sample size.

In this problem, we have a 90% confidence level, hence $\alpha = 0.9$ , z is the value of Z that has a p-value of $\frac{1+0.9}{2} = 0.95$ , so the critical value is z = 1.645.

The margin of error and the population standard deviation are given by, respectively:

$M = 10, \sigma = 15$ .

Then, we solve for n to find the needed sample size.

$M = z\frac{\sigma}{\sqrt{n}}$

$10 = 1.645\frac{15}{\sqrt{n}}$

$10\sqrt{n} = 1.645 \times 15$

$\sqrt{n} = 1.645 \times 1.5$

$(\sqrt{n})^2 = (1.645 \times 1.5)^2$

$n = 6.1$

Rounding up, 7 vehicles have to be sampled, hence option B is correct.

More can be learned about the z-distribution at brainly.com/question/25890103

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3 years ago

If y = 5 when x = 4, what is the value of y when x = 12?<br><br>a.9.6<br>b.10<br>c.12<br>d.15

OLEGan [10]

$\frac{12 \times 5}{4} = \frac{60}{4} = 15$

8 0

4 years ago

Read 2 more answers

Think I know this but need help

AVprozaik [17]

E40435.29 = E404,000

E214729.08 = E215,000

E64968.75 = E650,000

E223589.99 = E224,000

E111111.11 = E110,000

Hope this helps , pleeease vote as brainliest!!

8 0

3 years ago