1jennator
23.01.2020 •
Mathematics
What is the sum of the 7th and 15th term of the arithmetic sequence 2, 8, 14, ?
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Ответ:
Step-by-step explanation:
If we look at sequence,
a1=2 and a2=8
So,
d=a2-a1=8-2=6
And we know the formula for arithmetic sequence is
hence 7th term would be a_7=2+(7-1)*6=>
and a_15=2+(15-1)*6=>
Ответ: