The ratio of country albums to jazz albums in a music collection is 2:3. If the music collection has 45 albums, how many are country albums?

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

How do you write something in scientific notation?

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.