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elena-14-01-66 [18.8K]
2 years ago
12

A windmill on a farm rotates at a constant speed and completes one-half of a rotation in 0. 5 seconds. What is its rotation spee

d?
SAT
1 answer:
vesna_86 [32]2 years ago
6 0

Answer:

The angular velocity is the rotation speed, which is the angle of rotation

of the windmill per second, which is 2·π radians.

Explanation:

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The true statement about the directrix is that each directrix of this ellipse is 31.25 units from the center on the major axis.

<h3>How to determine the distance of the directrix?</h3>

The equation of the ellipse is given as:

\frac{(x - 5)^2}{625} -\frac{(y - 4)^2}{225} =1

The above means that:

a^2 = 625

a = 25

b^2 = 225

b = 15

Calculate c using:

c^2 = a^2 - b^2

This gives

c^2 = 625 - 225

Evaluate the difference

c^2 = 400

Evaluate the square root

c = 20

The equation of the directrix is

x - x₀ = ± a²/c

So, we have:

x - x₀ = ± 625/20

Evaluate the quotient

x - x₀ = ± 31.25

This means that, each directrix is 31.25 units from the center on the major axis.

Read more about directrix at:

brainly.com/question/26109874

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2 years ago
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fenix001 [56]

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Explanation:

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You know the answer is correct when the answer has a good star review such as 5 stars or has a good amount of likes. Everyone has a title by their name, the higher status it is, the more likely their answer would be right.
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Answer:

The samples are not independent of each other.

Explanation:

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