Russia and countires in eastern europe are in the process of moving from a what economy to a what economy

If scientists only detect p waves in a certain layer of earths interior what does that tell us?

In a short paragraph, describe your hometown in terms of its population and impact. do you live in a town or a city? is your home a higher-order or lower-order settlement? how does your hometown interact with other towns in its region? (houston)

Find the coordinates of a if b(-9,-10) is the midpoint of ac and c has the coordinates of (-1,9)