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3 years ago

Find the midpoint of the line segment with end coordinates of:

Mathematics

1 answer:

Kaylis [27]3 years ago

7 0

Answer:

Step-by-step explanation:

The Midpoint formula is

$M=(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})$ where the x's and y's come from the coordinates of the endpoints. Filling in:

$M=(\frac{-2+(-1)}{2},\frac{-4+(-5)}{2})=(\frac{-3}{2},\frac{-9}{2})=(-1.5,-4.5)$

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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

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3 years ago

Read 2 more answers

Which number is the LARGEST? -5/6 -3/4 -2/3 -4/5

Ivanshal [37]

Answer:

-2/3

Step-by-step explanation

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3 years ago

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Put fractions in order from greatest to least <br> 5/6 2/4 1/3 7/12

Drupady [299]

Answer: 1/3 2/4 7/12 5/6

Step-by-step explanation:

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3 years ago

A circle is increased to have a circumference that is 4 times larger than the original. Which of the following options best desc

kogti [31]

Area of a circle is directly proportional to the square of radius of the circle while the circumference is proportional to the radius of the circle. This means that if the radius of a circle is increased x times, then its area will be increased to x^2 times the original area, and the circumference will increase to x times the original circumference.

Thus when the radius is doubled, or in other words if radius mad 2 time the original radius, the area of circle will become 2^2 = 4 time the original area. The circumference will become 2 times the original circumference.

We can calculate exact area and circumference of a circle from its radius using the following equations:

Area of circle = (pi/4)*r^2

Circumference of circle = 2*pi*r

Where r is the radius of the circle.

I know this is a lot, sorry.

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3 years ago

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Nutka1998 [239]

Answer:

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Step-by-step explanation:

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3 years ago