Step-by-step explanation: 11x12 because one of them will be the one shaking hands with everyone else so he would have gotten 11 hands shaked so everyone would have gotten their hands shaked 11 times

3 0

3 years ago

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Find each lettered angel measure

hammer [34]

Answer:

a = 64°

b = 138.7°

Step-by-step explanation:

First, Let's find the measure a,

180° = 116° + a
180 - 116 = a
a = 64°

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Now,

90° + a + 82° + x + x + x = 360°
90+ 64 + 82 + 3x = 360°
236 + 3x = 360
3x = 124/ 3
x = 41.3°

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Now that we found out what x equals, let's find 'b'-

b + x = 180°
b + 41.3 = 180
b = 180 - 41.3
b = 138.7°

7 0

2 years ago

A triangle has a priemeter of 39 units . Each side of this triangle is the same length. What is the length of one side of the tr

Readme [11.4K]

This is easier to understand with a picture...

We know that a triangle has 3 sides right?

Well, if the perimeter is 39 and there are 3 sides you would divide 39 by the 3 sides

39/3=13

Therefore, one side of the triangle would equal 13

3 0

3 years ago