The Boston Massacre was about A- the start of the Revolutionary War
B- British soldiers murdering, raping and burning the city of Boston
C- the Sons of Liberty breaking into a barracks and killing a group of soldiers
D- a group of soldiers firing into a crowd that was harassing the customs office

D

Explanation:

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.