Pacal the great is an important figure in maya history because he:

a) invented the irrigation systems that allowed maya populations to increase rapidly.

b) led the revolt that overthrew the oppressive aztec regime that had dominated the maya for decades.

c) expanded the maya's western borders during his rule of nearly 7 decades.

d) conquered the anasazi to the north and the inca to the south.

the correct answer is “opportunity cost”. opportunity cost is what a company misses out because it decided in one option over another one. in this case, the company decided to invest in building a factory so it gave up another possible benefit or profit in order to achieve success with the factory.  

trade-off is not the correct answer since it is a situation in which you accept losing something in return for benefits in other areas.

and finally, consequence is a general term used to accept what it comes when you make a decision. it can be a positive or negative consequence depending if the decision you took was the correct one.  

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering

the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.

this is some false statement. aliens aren't real.

hope this .