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yuradex [85]
3 years ago
14

Which of the following months would be the darkest at the South Pole?

Mathematics
1 answer:
Juli2301 [7.4K]3 years ago
5 0

Answer:

February

Step-by-step explanation:

February would be the darkest at the South Pole. In the month of February, the temperature raises to -38 to -51 degrees over south pole.

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Find the five-number summary and box and whisky ploy for each set of data
IrinaK [193]
4. Min = 22
Max = 60
Med = 34
Q1 = 25
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5. Min = 68
Max = 100
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4 years ago
Find the unit rate.<br><br> $49.50<br> for 512 hours
Dvinal [7]

Answer:

49.50/512 dollars/hr

Step-by-step explanation:

$49.50 / 512 hours

$ / hr

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4 years ago
Please help me please I really need help please help me
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Keisha wants to estimate the percentage of managers at her company that hold an MBA. She surveys 320 managers and finds that 70
kondor19780726 [428]

Answer:

The margin of error is of 0.038 = 3.8%.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

n = 320, \pi = \frac{70}{320} = 0.21875

90% confidence level

So \alpha = 0.1, z is the value of Z that has a pvalue of 1 - \frac{0.1}{2} = 0.95, so Z = 1.645.

The margin of error is:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

M = 1.645\sqrt{\frac{0.21875(1-0.21875)}{320}}

M = 0.038

The margin of error is of 0.038 = 3.8%.

6 0
4 years ago
The question of two numbers is eight the sum of the same two numbers is 72 what are the two numbers
Otrada [13]

Answer:

The two numbers are 64 and 8.

Step-by-step explanation:

You meant "quotient" of two numbers, right?

Represent the numbers by x and  y.

Then the quotient is x/y = 8, and beyond that we know that x + y = 72.

Solve this for x and y.  

If x/y = 8, then x = 8y.  Substituting this into x + y = 72, we get:

(8y) + y = 72, or 9y = 72.  Dividing both sides by 9 yields y = 8.

Since x/y = 8, letting y = 8 results in x = 64.

The two numbers are 64 and 8.

5 0
3 years ago
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