Jean camps beside a wide river and wonders how wide it is. she spots a large rock on the bank directly across from her. she then walks upstream until she judges that the angle between her and the rock, which she can still see clearly, is now at an angle of 20º downstream. jean measures her stride to be about one yard long. the distance back to her camp is 150 strides. about how far across, in meters, is the river?

every society, in order to meet the needs of it's people, has to answer three basic questions:

- what should we produce?

- how should we produce it?

- for whom should we produce it?

this questions must be answered in order to, option b, aid in production decisions.

every country can't produce everything, no matter how rich their land is. it may be a matter of technology, resources or geographical conditions. so, these three questions must be resolved in order to get the most of the production of each land.

hope this !

in about winter like late november to january

this is not a question

answer; attention;