Question 189470: For the given sequence, identify if it is an aritmetic sequence by answering yes or no. If yes, then identify the common difference.
1. 1/6,1/3,1/2,2/3
For these quesions please find the missing term of each arithmetic sequence.(?) means number that goes there?
8,(?),20
3.5,(?),12.5
Answer by user_dude2008(1862)   (Show Source):
You can put this solution on YOUR website! 1. 1/6,1/3,1/2,2/3
Sequence is arithmetic, common difference is d = 1/6 (subtract any term from next term to find it)
8,(?),20
8+20=28 ---> 28/2=14
Missing number is 14
Sequence is 8, 14, 20 ----> arithmetic common difference d=6
3.5,(?),12.5
3.5+12.5=16 ---> 16/2 = 8
Missing # is 8
sequence: 3.5, 8, 12.5 ----> arithmetic common difference d=4.5
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