Help me please and thank you please explain so I can make sure your right and understand :)


Answer:7 and 21
Step-by-step explanation:
If the points are arranged BAC, the distance BC is BA+AC = 12 +19 = 31.
If the points are arranged ABC, the distance BC is AC-AB = 19 -12 = 7.
im only in middle school but I’m positive I’m 100% right