Answer:
TB = 5.5 units
Step-by-step explanation:
Segment AB has a length of 22 units, then half of the segment has the length of 11 units.
If X is the midpoint of AB, then
AX = XB = 11 units.
Half of segments AX and XB have the measures of 5.5 units.
If T is the midpoint of XB, then
XT = TB = 5.5 units.