Question

If BC = 4.5, CD = 7.7, and AD = 16.7, find AB to the nearest tenth.

Answer 1

We are already given with the following
BC = 4.5
CD = 7.7
AD = 16.7
We are asked for AB
Assuming that the line segments are colinear, we have the equation
AB + BC + CD = AD
Substituting
AB + 4.5 + 7.7 = 16.7
AB = 4.5