Answer:

Step-by-step explanation:
1) q=90/180=45/90=...=1/2;
2) the formula of the n-th term of the given sequence is:

3) according to the formula 15th term is:

or ≈0.011.
Answer:
360
Step-by-step explanation:
The sum of the exterior angles of a regular polygon, irrespective of the number of sides is 360 degrees. If N is the number of sides, each exterior angle will be 360/N degrees. In the present case there 5 sides in a regular pentagon, hence each exterior = 360/5 or 72 degrees.
13 divided by 2 is 6.5 and 31 divide by 2 is 15.5 I hope this helped
1. w=2
2. x=2
3. y=-5
4. a=1
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