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givi [52]
3 years ago
9

Please help i put the pictures down low, I really need it.

Mathematics
1 answer:
SVEN [57.7K]3 years ago
4 0
Part A
.. (480 books)/(5 cartons) = 480/5 books/carton = 96 books/carton

Part B
.. (7440 dollars)/(480 books) = 7440/480 dollars/book = $15.50 for 1 book

Part C
.. (2 minutes)/(48 books) * (200 books) = 400/48 minutes
.. = 8 minutes 20 seconds

Part D
In 9 minutes, the worker unpacked
.. (48 books)/(2 minutes)*(9 minutes) = 216 books
In 9 minutes, the manager upacked
.. (54 books)/(3 minutes)*(9 minutes) = 162 books

We note that 216 -162 = 54.

The worker unpacked 54 more books in 9 minutes than the manager did.
You might be interested in
Math Problem Solving<br>statistics and probability​
luda_lava [24]

Answer:

Standard Deviation = 3.22

Variance = 10.36

Step-by-step explanation:

x          P(x)           x × P(x)              x²             x² × P(x)

19         0.20           3.8                  361               72.2

10         0.20             2                   100                20

11          0.30           3.3                   121                36.3

12         0.20           2.4                   144               28.8

13          0.10            1.3                   169                16.9

____________________________________________

                            12.8                                         174.2            => Total

<em><u>Mean Formula</u></em>

\mu_x = \sum(x \times P(x)) = 12.8

\mu_x^2 = 163.84

<em><u>Variance Formula</u></em>

\sigma _x^2 = \sum[x^2 \times P(x)] - \mu_x^2      

   = 174.2- 163.84\\\\=10.36

<em><u>Standard Deviation Formula</u></em>

Standard\ deviation, \ \sigma_x = \sqrt{Variance}

                                   =\sqrt{10.36}\\\\=3.218      

   

5 0
3 years ago
For each gym membership sold, the gym keeps $42 and the employee who sold it gets $8. What is the commission the employee earned
horrorfan [7]

Answer:

Commission of the employee = 16%

Step-by-step explanation:

It is given that:

Amount kept by gym = $42

Amount given to employee = $8

Total fee = 42 + 8 = $50

Commission rate = \frac{Commission}{Total\ fee}*100

Commission rate = \frac{8}{50}*100

Commission rate = 0.16 * 100 = 16%

Therefore,

Commission of the employee = 16%

4 0
3 years ago
Read 2 more answers
Rusty is training for a triathlon. He
USPshnik [31]

Answer:

207 miles

Step-by-step explanation:

92/4

9•23

6 0
3 years ago
Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).
kati45 [8]

Answer:

42.39 cubic feet

Step-by-step explanation:

7 0
3 years ago
Adult entrance fees to amusement parks in the United States are normally distributed with a population standard deviation of 2.5
kondor19780726 [428]

Answer:  1.509

Step-by-step explanation:

The formula of Margin of Error for (n<30):-

E=t_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

Given : Sample size : n= 22

Level of confidence = 0.99

Significance level : \alpha=1-0.99=0.01

Using the t-distribution table ,

Critical value : t_{n-1, \alpha/2}=t_{21,0.005}= 2.831

Standard deviation: \sigma=\text{ 2.5 dollars }

Then, we have

E=( 2.831)\dfrac{2.5}{\sqrt{22}}\approx1.509

Hence, the margin of error for a 99% confidence interval for the population mean =1.509

4 0
3 years ago
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