Answer:the answer is B : -250
Step-by-step explanation:
Since this is a polygon with 6 sides, it has a total of 720 degrees.
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So adding together all the angles, you get:
(2x-50) + (x+40) + (x+20) + x + 150 + 80.
Simplify.
5x+240. And since you know all the angles add up to 720 degrees, set it equal to each other.
5x+240 = 720
5x= 480 (720-240)
x= 96
Finally, plug in x to get the rest of your answers.
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Answer:
28°
Step-by-step explanation:
every Triangle equals to 180°
85+67=152
180-152=28
X=1
Y=6
X=3
Y=18
X=5
Y=30
X=7
Y=42
X=9
Y=54
