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3 years ago

How many square units are in the greatest area that can be enclosed by a rectangle whose perimeter is 20 units?

1 answer:

7 0

In order to have a greatest rectangle, it has to be a square. Because the perimeter is 20 units, the length of 1 side of the rectangle is 20:4=5. Thus, there are 5*5= 25 units could be enclosed in the rectangle. Feel free to ask more :))

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The labor force participation rate is the number of people in the labor force divided by the number of people in the country who

zepelin [54]

Answer:

The expected participation rate is 0.637.

The standard error is 0.04397

Step-by-step explanation:

For each working age people asked, there are only two possible outcomes. Either they are in the labor force, or they are not. This means that we can solve this problem using binomial distribution probability concepts.

Binomial probability:

Expected value for the participation rate: The expected value is the probability of a success. In this problem, a success is a working age people being in the labor force. 63.7% of them are. So $\pi = 0.637$ . This means that the expected participation rate is 0.637.

Standard error for the participation rate:

The standard error is given by the following formula:

$\sigma = \sqrt{\frac{\pi(1-\pi)}{n}}$ .

In this problem, 120 people are asked, so $\pi = 120$

$s = \sqrt{n\pi(1-\pi)} = \sqrt{\frac{0.637*(1-0.637)}{120}} = 0.04397$ .

So the standard error is 0.04397

8 0

3 years ago

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Describe and correct the error in telling whether the two figures are congruent?

Aleks04 [339]

2 figures are congruent if at least 2 sides are the same length, there angles are the same, etc

4 0

3 years ago

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HELP ASAP I WILL MARK BRANLIEST!!!

Xelga [282]

Answer:

0.14

Step-by-step explanation:

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3 years ago

How do you find the x and y intercepts of 5x+4y=-20

irina1246 [14]

To find the y intercept, you cover x and it's coefficient and then divide -20 by 4 to get -5. To find the x intercept, you cover y and it's coefficient and divide 5 by -20 to get -4. So, x = -4 and y= -5

8 0

3 years ago

The frequency of the musical note E3 is about 164.81 Hz.

laiz [17]

A perfect fifth above a note has a frequency ratio of 3 to 2.
Therefore, we can set the proportion:
164.81 : x = 2 : 3

which gives:
x = <span>164.81 </span>× 3 ÷ 2
= 247.21

Hence, the perfect fifth above E₃ will have a frequency of 247.21Hz which corresponds to a B₃.

6 0

4 years ago

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