What are the missing sides in a triangle written as integers or as decimals rounded to the nearest tenth? The figure is not drawn to scale.

Can someone explain to me how to do

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.

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me