the number is x
2/9x -13
multiply both sides by 9
2x -117
divide both sides by 2
x -58 1/2
Write the next three terms of the arithmetic sequence.
1 answer:
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Answer:
3.6° = ext. angle
Step-by-step explanation:
For the shape to be a regular polygon, all interior angles must be congruent.
We can find every interior angle by using the formula:
176.4 = each int. angle
We also know that int. and ext. angles are supplementary!
180 = 176.4 - x
3.6° = ext. angle