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3 years ago

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

2 answers:

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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Please please find the area for this polygon!

zzz [600]

Answer:

508

Step-by-step explanation:

28*16= 448

6*6= 36

4*6= 24

448+36+24= 508

5 0

3 years ago

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What is the equivalent to (3x squared)cubed ?

Amiraneli [1.4K]

$(3x^2)^3=(3^1x^2)^3 =3^1^*^3x^2^*^3=3^3x^6=3*3*3*x^6=27x^6$

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3 years ago

When x=8,y=20.find y when x=20

Deffense [45]

20/8 = 2.5

20 * 2.5 = 50

x = 8 * 2.5

y = 20 * 2.5

When x = 20, y = 50

6 0

4 years ago

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A water tank is leaking such that for each of the next 5 hours, the amount of water in the tank will be 2 gallons less than at t

Eddi Din [679]

Answer: (A) linear decrease

Step-by-step explanation:

linear decrease is when something empties for the same rate.

8 0

3 years ago

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(a) Count the number of ways to select a sample of 3 people to serve on a board of directors from a population of 6 people______

ValentinkaMS [17]

Answer:

(a) 20 ways

(b) 0.05 or 5%

Step-by-step explanation:

(a) Assuming that the order in which people are chosen does not matter, the number of ways to select 3 people out of possible 6 is given by the following combination.

$n=\frac{6!}{(6-3)!3!}=\frac{6*5*4}{3*2*1}=20\ ways$

(b) In a random sampling procedure, every outcome is just as likely to occur. Therefore, the chances that any particular sample will be the one selected are:

$C = \frac{1}{20}=0.05 = 5\%$

8 0

3 years ago