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Talja [164]
3 years ago
7

What is the smallest degree of rotation that will map a regular 18-gon onto itself?

Mathematics
2 answers:
Korolek [52]3 years ago
6 0
Because the 18-gon is symmetrical, you can rotate it by 360/18 or 20 degrees. This is because when you rotate it by 20 degrees(to the left for explanation matters), any angle will now be in the position of its angle to its left.
neonofarm [45]3 years ago
3 0

Answer:

The answer is 20

Step-by-step explanation:

360 will be divided by 18 which will give you 20. For those of you who had the same question but instead of "18-gon" you had "20-gon" if you divide 360 by 20 your answer will be 18.

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3 years ago
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The probability of a chance event is 0.5, it is __________ to happen when compared to a chance event with a probability of 1.
nignag [31]

Answer:

less likely

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Probability is between 0 and 1 so 1 is guaranteed to happen and 0 is guaranteed to not happen

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The paper usage at a small copy center is normally distributed with a mean of 5 boxes of paper per week, and a standard deviatio
VladimirAG [237]

Answer:

1.649 approximately 2

Step-by-step explanation:

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Time taken = lead time = 2 weeks

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We are required to find the safety stock to maintain at 99% service level.

At 99% level, the Z value is equal to 2.326.

Therefore,

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7 0
3 years ago
A boulder falls off the top of a cliff during a storm. The cliff is 90 feet high.
andreev551 [17]

Answer:

It will take the boulder approximately 4.28 seconds to hit the road

Step-by-step explanation:

The given height of the cliff from which the boulder falls, h = 90 feet

The equation that can be used to find the time it takes the boulder to fall is h = u·t + (1/2)·g·t²

Where;

h = The height of the cliff = 90 ft.

u = The initial velocity of the boulder = 0 m/s (The boulder is assumed to be at rest when it falls)

g - The acceleration due to gravity ≈ 9.81 m/s²

t = How long it will take for the boulder to hit the road below

Plugging in the values gives;

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∴ t = √(90/4.905) ≈ 4.28

The time it takes the boulder to hit the road, t ≈ 4.28 seconds.

7 0
2 years ago
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2 years ago
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