1/2AB=1/2(a)(r) + 1/2(b)(r) + 1/2(c)(r)

The line dividing regions 4 & 5 on this map is known as the "fall line." which of these represents an important factor of the fall line in georgia history? a) it was the first boundary of the georgia after it became a state. b) it was an important source of power due to a change in elevation. c) it was once home to major cities that have since become abandoned. d) it was a dividing line between the united states and native american territories.

Me i really need which of these was an accomplishment of the han dynasty? the invention of the seismograph finding a water passage to europe the invention of the ballpoint pen the invention of the abacus

The function y= -x-3 is graphed only over the domain of {x|8 a: {|-5 b: {y|1 c: {y|1 d: {y|1