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ahrayia [7]
3 years ago
15

Can someone please explain how to do this? Geometry EOC's are tomorrow and I have to know this stuff so please answer quickly.

Mathematics
2 answers:
Mnenie [13.5K]3 years ago
8 0
A rule of Polygons is that the sum of the exterior angles must equal 360. 
Remember that for your testing. 
A polygon is where all sides equal the same amount, in your case, 18 degrees.
So divide 360 by 16, equalling D.20
Good Luck!

Dmitry_Shevchenko [17]3 years ago
8 0
3.
we can solve it

draw a point for the center
draw lines from the center to each vertex
you get  lots of triangles

see the diagram so it won't be confusing an since I will be refering to stuff in there

striahge line=180
so
18+x+x=180
minus 18
2x=162
divide 2
x=81
now we know 2 interior angles
x and y=81
angles ina triangle add to 180
therefor
x+y+z=180
81+81+z=180
162+z=180
minus 162
z=18

all central angles add up to 360
how man y are there?
18 times how many=360
divide both sidess by 18
how many angles=20
20 central angles=20 sides





4.

we can compare using side to angle ratios
since 9=9 and they share a side, the sides PQ and SR and congruent and PS is congruent to PS
therfor the only different side is QS and PR

ratio is the angles
QS:PR=63:105=3:5

they are in ratio 3:5

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Lisa [10]
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the amount of 75 octane is 2 gallons
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Hope this helps.
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3 years ago
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jek_recluse [69]

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3 0
3 years ago
I don’t understand!!!!!
Sergio039 [100]

These are vertical angles, meaning they're always the same length.

3x = x + 28

2x = 28

x = 14

4 0
3 years ago
David brought a variety pack of delicious donuts for his daughters Amy & Anna. Amy ate 2/3 of the pack and Anna devoured 1/4
Naya [18.7K]

Answer:

12

Step-by-step explanation:

Let the total number of donuts in the pack be x.

Amy = 2/3x

Anna = 1/4x

David = 1

x - 2/3x - 1/4x = 1

Find common denominators for 2/3 and 1/4

The common denominator is 12

2/3 * 4/4 = 8/12

1/4 * 3/3 = 3/12

x - 8/12x - 3/12x = 1

x - 11/12x = 1

1/12x = 1

x = 12

You can always check

Amy = 8

Anna = 3

So David must equal to 1

Hope this helps :)

Have an awesome day!

6 0
2 years ago
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