Around how long did the Sui Dynasty rule China? *
NEED ANSWERS ASAP

581 to 618 AD

Explanation:

The Sui Dynasty is most famous for unifying China under one rule after the Period of Disunion. The Sui Dynasty only ruled for a short time from 581 to 618 AD. It was replaced by the Tang Dynasty. Since the fall of the great Han Dynasty in 220 AD, China had been divided.

answer: this problem has only trivial solutions, with all points on the same line. x=5 or x=7/5.

step-by-step explanation:

there are three triangles, and three unknowns: x, y=length of middle segment, and z=cos(angles marked with red arc).

we need

and law of cosines,

the three equations are

see attached image for solution.

where are the statements?