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lianna [129]
3 years ago
11

Find the sum of the interior angles of a dodecagon ( 12 sides ) show work for your answer!  ❤️

Mathematics
1 answer:
Ksivusya [100]3 years ago
7 0

Answer:

Sum of Interior Angles = (Number of Sides -2) • 180 degrees

Sum = (12 -2) * 180

Sum of the interior angles = 1,800 degrees

Source:  http://www.1728.org/polygon.htm

Step-by-step explanation:

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PLEASE HELP ME
Nitella [24]

Answer: 136 units squared

Step-by-step explanation:

I will assume this is a rectangular prism since it isn't specified.

The surface area of a rectangular prism: SA = 2(lw+lh+wh).

Plugging in your dimensions: SA = 2(7*2 + 7*6 + 2*6) = 2(14+42+12) = 2(68) = 136 units squared.

8 0
3 years ago
Which situation is best modeled by the inequality g ≤ 13?
Olin [163]

Answer:

You must be no older than 13 to play a game.

Step-by-step explanation:

≤ this sign means equal to or less than in this case it is 13

8 0
3 years ago
Write an equation to solve each problem and then solve it. The sum of three consecutive integers is 54. Find the integers. if th
likoan [24]

Answer:

It is 17,18 and 19

Step-by-step explanation:

Consecutive numbers are

x, x+1, x+2

x+x+1+x+2=54

3x+3=54

-3       -3

3x=51

x=17

17

17+1=18

17+2=19

17, 18 and 19

7 0
2 years ago
Urgent:
rjkz [21]

Step-by-step explanation:

<h3>Given:</h3>
  • CM ⊥ AB
  • ∠3 = ∠4
<h3>To prove: </h3>
  • △AMC ≅ △BMC
<h3>Solution:</h3>
  • ∠ACM≅∠BCM - given

<u>CM⊥AB - given, therefore</u>

  • ∠AMC = 90° and ∠BMC = 90°

<u>Then</u>

  • ∠AMC ≅ ∠BMC
  • Side CM is common, therefore is congruent to itself

<u>So we have congruent two angles and a side between them on triangles AMC and BMC:</u>

  • △AMC ≅ △BMC as per ASA congruency theorem
5 0
2 years ago
Solve the equation.<br><br> –18 + 3x = –6<br><br><br> –2<br><br> –8<br><br> –18<br><br> 4
-Dominant- [34]
Its 4 hope this helped

5 0
2 years ago
Read 2 more answers
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