Answer:
-2
Step-by-step explanation:
(-5) + (+3)
= -5+3
= -2
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Answer:
108°
Step-by-step explanation:
Suppose that circle with center A is a circular arena. Points B, C, D, E and F are 5 lights. These 5 points form regular pentagon (because these 5 lights are equally spaced around the perimeter of the arena).
The sum of all interior angles of pentagon can be calculated using following formula

All interior angles in regular pentagon are of equal measure, so

Thus, the measure of each angle formed by the lights on the perimeter is 108°.
You need to know how fast you could read one fourth of the book. Then you can answer
The cc’d between 23 and 46 is 23