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Rus_ich [418]
3 years ago
8

If an exterior angle of a regular polygon is 21.2°, how many sides does the polygon have?

Mathematics
1 answer:
sesenic [268]3 years ago
3 0
360 divided by x = 21.2 recurring
So rearrange that to get x = 360 divided by 21.2
Which rounds up to 17
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PLEASE HELP
Zielflug [23.3K]

Answer:

  • x = 4
  • WX = WY = 25
  • XY = 17

Step-by-step explanation:

The triangle is isosceles with side WX equal to side WY:

  WX = WY

  9x -11 = 7x -3

  2x = 8 . . . . . add 11-7x

  x = 4

Then the side measures are ...

  WX = WY = 7(4) -3 = 28 -3 = 25

  XY = 4(4) +1 = 16 +1 = 17

5 0
2 years ago
Which of the ratios does not form a proportion 28.49=4.7
VARVARA [1.3K]
28.49 because they dont have a proportion 
7 0
3 years ago
In this graph, the y-intercept of the line is ___.<br> The equation of the line is y=__ x __.
KonstantinChe [14]

Answer:

In this graph, the y-intercept of the line is -2, if the coordinates are needed, its (0,-2). The equation of the line is y= x-2 ( slope intercept form ).

Step-by-step explanation: I am not sure how to use the multiplication system below to write the equation, so sorry I couldn't help!

5 0
2 years ago
Why did the tennis player decide to get glasses?
Sauron [17]

Answer:

becuae he couldent see sorry i had to do that

5 0
2 years ago
Read 2 more answers
I need some help on this math problem, thanks so much
bekas [8.4K]

Answer:

The answer is C.

Step-by-step explanation:

Hit 'em with the Law of Sines.

sin(A)/a = sin(B)/b.

Let's say x is equal to "A", thus 5 is "a".

sin(x)/5 = sin(B)/b.

We could go for the obvious choice for "B", which would be the 90 degrees shown. To solve for the hypotenuse which will be "b", let's use the Pythagorean Theorem:

a^2 + b^2 = c^2

5^2 + 20^2 = c^2

25 + 400 = 425

sqrt(425) = about 20.6, which we can now substitute "b" with.

sin(x)/5 = sin(90)/20.6

sin(x)/5 = 1/20.6

sin(x)/5 = 0.04854...

sin(x) = 0.2427...

You can plug in sin^-1(0.2427) into your calculator, and you should end up with something like 14.047... which equates to answer choice C.

6 0
2 years ago
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