Find probability

1. what is the probability of rolling on a single die a 7? write as a percent rounded to nearest whole.

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 the multiplicative inverse of 8-12i

If the discriminant if a quadratic equation is 4 which statement describes the roots?