Which options describe chinese developments in mathematics?

(select all that apply.)

a. the first chinese book about mathematics, nine chapters on the mathematical art, was composed before 200 bc.

b. the han dynasty invented calculus, even though sir isaac newton has been given credit in most history books.

c. the chinese discovered the ratio of a circle’s circumference to its diameter, known as pi (π), centuries before the greek empire.

d. prior to inventing numbers, the chinese method of number writing used clusters of short vertical or horizontal lines for digits.

The correct answers are A) the first Chinese book about mathematics, Nine Chapters on the Mathematical Art, was composed before 200 BC and B) the Han Dynasty invented calculus, even though Sir Isaac Newton has been given credit in most history books.

The options that describe Chinese developments in mathematics are the first Chinese book about mathematics, Nine Chapters on the Mathematical Art, was composed before 200 BC and the Han Dynasty invented calculus, even though Sir Isaac Newton has been given credit in most history books.

Historians consider that the Chinese developed its mathematics by the 11th century. They worked with decimals, negative numbers, algebra, geometry, and trigonometry. The Chinese people were smart enough to work with many areas in mathematics that could apply in many aspects of their life.

i believe the correct answer is option b. most eastern european nations joined nato.

though i could be wrong, option d. the eastern european nations were granted complete independence, would be another choice.

hope this ! : )

c, because the american revolution was from 1765 to 1783.