For each tessellation, find the measure of each angle at the circled vertex. then find the sum of the angles. (just explain how to do this)

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.

What is the solution to the equation below? 3/x-2+6=square root x-2 +8

Someone me! if you’re smart you can solve this!