What is the product (7*10^-5)*(5*10^-8)

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.

Hi, can anyone show me how to do this problem? 100 points for this. in advance

There are 93 calories in a small candy bar how many calories are ther in a half dozen small candy bars?