Answer:
I believe it's the second option, Hope's this helps hun!
Answer:
d: all of these answers are correct
Answer:
understood the idea of zero as a number
Explanation:
the Mayans developed zero as a placeholder around A.D. 350 and used it to denote a placeholder in their elaborate calendar systems. Despite being highly skilled mathematicians, the Mayans never used zero in equations
Answer:
The first city-states were in Sumer, but they reached their peak in Greece.
Explanation: The first city-states were in Sumer, but they reached their peak in Greece. From the beginning of Greek history to its climax in the 5th and 4th cent. BC, the Greeks were organized into city-states, of which there were several hundred. The first Italian city-states were Greek colonies.
