Please answer all 3 questions! I provided them in pictures.

Mathematics

1 answer:

nirvana33 [79]4 years ago

5 0

Answer:

2) -3.1

3) -27/40

4) Step 2

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Step-by-step explanation:

The sum of all interior angles in a polygon with $n$ sides ( $n\in \mathbb{Z}$ , $n \ge 3$ ) is equal to $(n - 2) \cdot 180^{\circ}$ . (Credit: Mathsisfun.)