Z2=2-i x2=2

y2=-1 -->r^2=5

sin(teta)=-1/5^0.5 >teta2=-26

z2/z1=(2.5)^0.5 (cos (-71)+isin(-71))

Which trait is used to evaluate a writer's opinion and purpose? a. voice b. ideas and content c. organization d. conventions a. voice

The greatest gift the sumerians gave the world was the invention of writing. the sumerians were a wealthy people. they needed some way to keep track of what they owned. they began drawing pictures. they used a reed as a pen. they drew on soft pieces of clay. the soft clay was then dried in the sun. the tablet became a permanent record. later, the sumerian drawings changed into wedge-shaped symbols. this kind of writing is called cuneiform. by putting symbols together, the sumerians could write entire sentences.

Idon't know which one from these two forms is correct! "he believed that the technology of the future would allow robots to do the same tasks as a human." or "he believed that the technology of the future would have allowed robots to do the same tasks as a human. , it's ! i need your !