Which describes the type of exchange that does not use money?
subject is really economics

Aplane takes off from an airport and flies to town a, located d1 = 215 km from the airport in the direction 20.0° north of east. the plane then flies to town b, located d2 = 230 km at 30.0° west of north from town a. use graphical methods to determine the distance and direction from town b to the airport. (enter the distance in km and the direction in degrees south of west.)

Which of the following is an example of units for speed

Aphysical change is a change in the size, shape,, or stafe of matter true or false