Here is the completed proof with the appropriate reasons matched to each statement:
Statements: Reasons:
- M lies on AB, AB=28 1) Given
- AM + MB = AB 2) Segment addition postulate
- 2x + 2 + 4x - 10 = 28 3) Substitution Property
- 6x - 8 = 28 4) Combine like terms
- 6x = 36 5) Addition property of equality
- x = 6 6) Division property of equality
- AM = 2(6) + 2 and MB = 4(6) = 10 7) Substitution property
- AM = 14 and MB = 14 8) Simplifying
- M is a midpoint 9) Definition of a midpoint
This arrangement matches the statements with their corresponding reasons to complete the proof that M is a midpoint of segment AB.