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2 years ago

12

A shark begins 172.5 meters below sea level and then swam up 137.1 meters,. Where is the sharks location now in relation to sea

level

1 answer:

Mice21 [21]2 years ago

5 0

Answer:

35.4m below sea level

Step-by-step explanation:

172.5 - 137.1 = 35.4

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What is the decimal equivalent of 10/3? its more than 1 and its not 3.3333 or 0.3 HELP PLS>

Rama09 [41]

Answer:

it should be 3.3 repeating but maybe your teacher has it as 3.34?

3 0

3 years ago

Find the value of x<br>

Monica [59]

X= 130°

Step-by-step explanation:

From E, draw EF || AB || CD.

Now, EF || CD and CE is the transversal.

So; <DCE + <CEF = 180° [co. int. <s]

x° + <CEF = 180°

<CEF = (180° – x°).

Again, EF || AB and AE is the transversal.

So; <BAE + <AEF = 180° 01 [co. int. <s ]

105° + <AEC+ <CEF = 180°

105° +25° + (180° – x°) = 180°

x° = 130°

I hope I helped you^_^

7 0

3 years ago

Because of staffing decisions, managers of the Gibson-Marion Hotel are interested in the variability in the number of rooms occu

olchik [2.2K]

Answer:

a) $s^2 =30^2 =900$

b) $\frac{(19)(30)^2}{30.144} \leq \sigma^2 \leq \frac{(19)(30)^2}{10.117}$

$567.28 \leq \sigma^2 \leq 1690.224$

c) $23.818 \leq \sigma \leq 41.112$

Step-by-step explanation:

Assuming the following question: Because of staffing decisions, managers of the Gibson-Marimont Hotel are interested in the variability in the number of rooms occupied per day during a particular season of the year. A sample of 20 days of operation shows a sample mean of 290 rooms occupied per day and a sample standard deviation of 30 rooms

Part a

For this case the best point of estimate for the population variance would be:

$s^2 =30^2 =900$

Part b

The confidence interval for the population variance is given by the following formula:

$\frac{(n-1)s^2}{\chi^2_{\alpha/2}} \leq \sigma^2 \leq \frac{(n-1)s^2}{\chi^2_{1-\alpha/2}}$

The degrees of freedom are given by:

$df=n-1=20-1=19$

Since the Confidence is 0.90 or 90%, the significance $\alpha=0.1$ and $\alpha/2 =0.05$ , the critical values for this case are:

$\chi^2_{\alpha/2}=30.144$

$\chi^2_{1- \alpha/2}=10.117$

And replacing into the formula for the interval we got:

$\frac{(19)(30)^2}{30.144} \leq \sigma^2 \leq \frac{(19)(30)^2}{10.117}$

$567.28 \leq \sigma^2 \leq 1690.224$

Part c

Now we just take square root on both sides of the interval and we got:

$23.818 \leq \sigma \leq 41.112$

5 0

4 years ago

12. A man planted trees on both sides of

netineya [11]

Answer:

1000 trees : Can u plz give me the brainliest answer? Plz!!!!!!!!!!!!!!!

Step-by-step explanation:

5000m divided by 5m = 1000 trees

Have a nice day!!!!!! :-)

<u>KA</u>

3 0

3 years ago

Read 2 more answers

Brooklyn is arranging flowers along the front of her home. She has 40.27 square feet of planting space but has used 3.8 square f

Klio2033 [76]

Answer:

24 flowers

Step-by-step explanation:

40.27 - 3.8 = 36.47

36.47/1.5 = 24.313

4 0

4 years ago

Read 2 more answers