Guess how big I am, also add me on snap or insta

Aperpendicular bisector, cd is drawn through point con ab if the coordinates of point a are (-3, 2) and the coordinates of point b are (7,6), the x-intercept of cd is point lies on cd.

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?