Number of vertices of hexagon is 6
"He starts both trains at the same time. Train A returns to its starting point every 12 seconds and Train B returns to its starting point every 9 seconds". Basically, what you need to do is find the least common multiple. The least common multiple of 12 and 9 is 36, so the least amount of time, in seconds, that both trains will arrive at the starting points at the same time is 36 seconds.
Answer:
what do I have to do???........
Answer:
33000
Step-by-step explanation:
you do 60 times 10 cause theres 60 minutes in an hour and then you get that answer and the times 600 by 55
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The algebric expression for the sum of N and 9 is 
