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Alex17521 [72]
2 years ago
10

Please help me volume is 9881.25 but yeah please help mee

Mathematics
1 answer:
erik [133]2 years ago
5 0

Answer:

20.4

Step-by-step explanation:

see image

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Julian has 56 books arranges them in seven groups. Julian buys 16 more books and groups them in the same way as his other books.
Sunny_sXe [5.5K]
The equation that would represent the number of groups in al would be:

(56/8) + (16/8) = g
7 + 2 = g
9 = g

There would be 9 groups.

You will use the information to write a number sentence that would show the total number of groups.
3 0
3 years ago
1) Ten samples of a process measuring the number of returns per 100 receipts were taken for a local retail store.
densk [106]

Answer:

E) .0863

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

The population proportion have the following distribution

p \sim N(p,\sqrt{\frac{p(1-p)}{n}})

Solution to the problem

For this case we can find the sample proportion for each observation with the following formula:

\hat p = \frac{X}{n}

Where X represent the number of returns and n =100 for each case since the standard value used. Using the last formula we got:

p_1 = \frac{10}{100}=0.1

p_2 = \frac{9}{100}=0.09

p_3 = \frac{11}{100}=0.11

p_4 = \frac{7}{100}=0.07

p_5 = \frac{3}{100}=0.03

p_6 = \frac{12}{100}=0.12

p_7 = \frac{8}{100}=0.08

p_8 = \frac{4}{100}=0.04

p_9 = \frac{6}{100}=0.06

p_{10} = \frac{11}{100}=0.11

And now witht those values we can find the sample mean of proportions with the following formula:

hat p = \frac{\sum_{i=1}^n p_i}{n}= \frac{0.1+0.09+0.11+0.07+0.03+0.12+0.08+0.04+0.06+0.11}{10}=0.081

And we can find the standard error with the following formula:

SE= \sqrt{\frac{\hat p (1-\hat p)}{n}}=\sqrt{\frac{0.081(1-0.081)}{10}}=0.0863

So then the best option on this case is given by:

E) .0863

6 0
3 years ago
A ladder is leaning against the side of a building. The
cupoosta [38]

Answer:

16 ft

Step-by-step explanation:

Based on the situation above, it forms into a right triangle. Therefore we can apply the Pythagorean Theorem. We will use the formula below:

c = √( a² + b²)

In the problem above, the ladder acts as the hypotenuse denoted by c. It has a length of 20 ft. While the base denoted by b is 12 ft. Therefore, we need to solve for a. We will derive the formula above.

c² = a² + b²

a² = c² - b²

a = √( c² - b² )

a = √( 20² - 12² )

a = 16

The unit is in ft.

Correct me if I'm wrong. I hope it helps.

8 0
3 years ago
Thomas is grandfather's 100 years old. Thomas grandfather is 10 times as old as Thomas. How old is thomas
Diano4ka-milaya [45]
Its one thousand years old because you need to multiply 100 and 10. hope it was useful 


4 0
3 years ago
Read 2 more answers
Help please. Sort the numbers.
jasenka [17]

Answer:

1 = The Value of the expression is 10 for x = 3 and y = 2

2 = The Value of the expression is 10 for x = 3 and y = 2

3 = The Value of the expression is 10 for x = 2 and y = 3

4 = The Value of the expression is 10 for x = 2 and y = 3

5 = The Value of the expression is 10 for x = 2 and y = 3

6 = The Value of the expression is 10 for x = 3 and y = 2

Srry if im wrong

8 0
3 years ago
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