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3 years ago

12

PLS ANSWER ASAP I WILL MAKE YOU BRAINLIEST ( Number 10.)

2 answers:

OLEGan [10]3 years ago

6 0

Answer:

x=160°

since the sum of angles of the shape measures 540°

by summing up the values, we have

3x=480 divide both sides by 3

x=160°

Alecsey [184]3 years ago

4 0

Answer:

<h2>160°</h2><h2>I hope i am not too late </h2><h2 />

Step-by-step explanation:

$Sum\:of\:angles\: = 540\\\\\frac{1}{2}x +\frac{1}{2} x +(x-15)+(x-25)+100=540\\\\=\frac{1}{2}x+\frac{1}{2}x+x-15+x-25+100=540\\\\Group\: like \:terms\\\frac{1}{2}x+\frac{1}{2}x+x+x-15-25+100=540\\\\Add\:similar\:elements \::\frac{1}{2}x+\frac{1}{2}x=2\times\frac{1}{2}x\\2\times\frac{1}{2}x+x+x-15-25+100=540\\\\Simplify\\x+2x-15-25+100=540\\Simplify\\3x +60 = 540\\\\3x = 540-60\\3x = 480\\Divide \:both\:sides\:of\:the\:equation \:by\:3\\\\\frac{3x}{3} = \frac{480}{3}\\ x =160$

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