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2 years ago

How many rotation symmetries does a five-pointed star have? Please show work!!!!!!

Mathematics

2 answers:

yaroslaw [1]2 years ago

6 0

Answer:

4 rotational symmetries for 5 pointed star.

Step-by-step explanation:

To find : How many rotation symmetries does a five-pointed star have?

Solution :

The number of times a shape can be rotated and look the same within one full 360° rotation is called the order of the rotational symmetry, and the angle at which it can be rotated to look the same is called the angle of rotation.

Yes, a 5-point star has rotational symmetry.

A 5-point star is a two-dimensional polygon in the shape of a star with five points, or tips.

The number of rotation is given by,

$n=\frac{360}{5}$

$n=72^\circ$

Therefore, 4 rotational symmetries for 5 pointed star.

VikaD [51]2 years ago

3 0

What do you mean "how many"? Like how many different rotations can you do and it'll be the same or just symmetries in general?

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2 years ago

A laptop computer sells for $850. the sales tax is 7%. what is the total cost of the laptop?

evablogger [386]

Answer:

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Step-by-step explanation:

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2 years ago

If ABC and EDC are similar, what is the value<br> of x?<br> A

abruzzese [7]

Answer:

x = 15

Step-by-step explanation:

Since the triangles are similar then the ratios of corresponding sides are equal, that is

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3 0

2 years ago

Logan is a land surveyor. He wants to determine d, the distance across a lake that cannot be directly measured. He draws this di

Mice21 [21]

Answer:

The first option (5.7km)

Step-by-step explanation:

Since we have a right angle triangle and we know two of its sides we can easily find out the thirds side (the value of d) by using the Pathagoras Theorem. In our case 7 and d are our legs and the hypotenuse is equal to 9, so...

(Based on the Pathagoras Theorem)

$c^{2} = a^{2} + b^{2}$

$9^{2} = 7^{2} + d^{2}$

$d^{2} = 9^{2} - 7^{2} \\d^{2} = 81 - 49\\d^{2} = 32\\d = \sqrt{32}\\$

d ≈ 5.7km

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7 0

2 years ago

Read 2 more answers

Please I need help asap

jasenka [17]

Answer:

Option D - x = 3 3/5

Step-by-step explanation:

Lets make the left side into an improper fraction :

2 2/5 = 12/5

Now let's make both fraction into equivalent ones but with the same denominator :

2/3 = 10/15

12/5 = 36/15

Now we substitute the equivalent values back into the equation :

10/15 × x = 36/15

Now we multiply both sides by 15 to remove the denominators:

10 × x = 36

Now we divide both sides by 10 and simplify :

x = 36/10

x = 18/5

x = 3 3/5

So our answer will be Option D

Hope this helped and brainliest please

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1 year ago