The war on terrorism is considered an "invisible war" because invisible gases are a primarily tool used by terrorists to harm people most nations have ignored threats victims usually have no warning or immediate knowledge of the attacker the impact of terrorism is nearly invisible

the victims usually have no warning or immediate knowledge of attacker

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.