Answer:
D. 7
Step-by-step explanation:
LM = 13,
LN = 20,
Since points L, M, and N are collinear, therefore:
[tex] LM + MN = LN [/tex] (segment addition postulate)
[tex] 13 + MN = 20 [/tex] (substitution)
Subtract 13 from each side of the equation
[tex] 13 + MN - 13 = 20 - 13 [/tex]
[tex] 13 - 13 + MN = 7 [/tex]
[tex] MN = 7 [/tex]
Possible value of MN is 7.
The answer is D. 7.
