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Anna71 [15]
3 years ago
8

A regular 18-sided polygon is rotated with the center of rotation at its center. What is the smallest degree of rotation needed

to map the polygon back on to itself?
Mathematics
2 answers:
faltersainse [42]3 years ago
8 0
360/18=20 therefore the smallest degree of rotation would be 20
dem82 [27]3 years ago
4 0
It will be easier to explain how to solve this question in a square. If you rotate 4-sided square from the centre, you need to rotate it 90 degrees. The formula for this would be: 360 ° /the side count. In a square, it would be 360° /4= 90°.

In 18-sided polygon, the calculation would be: 360°/ 18 side= 20°
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.875 written as a percentage
Alex17521 [72]

Answer:

87.5%

Step-by-step explanation:

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7 0
3 years ago
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Fred buys flags from a manufacturer for f dollars each and then sells the flags in his store for a 26%markup.
Mashutka [201]

Answer:

the markup is 1.26 (the amount added is .26)

1.26x (when x is the price Fred buys them for from the manufacturer)

1.26(40)

$50.40 is the retail price

50.4-40

$10.40 is the markup

Step-by-step explanation:

The 26% markup means that he is selling the flags 26% above the cost.

So, the cost would represent 100%, which is 1, and 26% of markup in decimal number is 0.26.

The price including the markup would be 1.26 as decimal or 126% as percentage.

The problem states that the cost is unknown, so we represent that with a variable x. The retail price would be 1.26x, which is 126% per flag.

Finally, if Fred paid $40 per flag, the actual retail price would be:

1.26($40)=$50.40.

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5 0
3 years ago
Is 4.70 greater than 4.07
Aleks [24]
Yes it is
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4 0
4 years ago
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Explain how 3^7 + 2 must be an odd number
Firdavs [7]
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2,187 is an odd number because the last number is a 7 which is odd.
5 0
2 years ago
Carey earns $9.75 working part time on weekends. The table below shows the amount, a, Carey earns for working h hours.
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$29.25 in 3 hours. explanation: if he makes $9.75 in 1 hour then 9.75 x 3 (hours) would equal $29.25
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