Pls help ;( I just need the answer

Add the fractions and simplify 1/2+ 1/3

The number of calories you burn depends on your weight. a 110-pound person burns 163 calories during 30 minutes of tennis. find the number of calories that a 190-pound person would burn during the same activity, assuming they burn calories at the same rate.

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.