Which is the soluction of x/5 - 10 = 20?A x = 2 B x = 6C x = 50D x = 150
2 answers:
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Answer:
1120°
Step-by-step explanation:
Use the sum of interior angles formula:
Where n is the number of sides.
In a nonagon, there are 9 sides, substitute 9 for n:
Since our nonagon is a regular nonagon, all 9 angles measure the same, so each angle measures:
Subtract 140 from 1260: