Answer:
6 units
Explanation:
If point U is on the line segment TV, this means that point T, U and V are collinear. The expression TU+UV = TV will represent the sum of the line segments.
Given UV = 13, TV = 19, we are to find TU.
Substitute the given values into the formula to get TU as shown;
TU + 13 = 19
subtract 13 from both sides
TU+13-13 = 19-13
TU = 6
Hence the length of TU is 6 units