the sum of interior angles of a regular polygon is 720 degrees find the number of sides of the polygon and give its name

Consider symmetrically placed rectangular insulators with uniformly charged distributions of equal magnitude as shown. x y −−−−−− what is the direction of the net field at the origin?

Find two rational expressions that have the difference of 2-n/n-4

2x - 20 = 32 20 - 3x = 8 6x - 8 = 16 -13 - 3x = -10