A radio controlled car rolls 10 m south then reverses and rolls 8 m north . The car has traveled a distance of 28 m and has a displacement of _ m south

1) the mayans built pyramids just like the egyptians. the mayans also used hieroglyphics like them.2) power was passed down by family. for example, if the father dies, the son would be the next king.3)they both built pyramids for their structures.4)the main crop for the mayans was maize.5)they also grew manioc, beans,  squash,  amaranth, and chile peppers.

Because people are wasting it

When scientist examine data such as historical documents, they are using the "scientific methods"

Self-reports would be the answer.