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What is the sum of the 7th and 15th term of the arithmetic sequence 2, 8, 14, ... ?

User Ericgol
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1 Answer

6 votes

Answer:

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


a_n=a_1+(n-1)*d

hence 7th term would be a_7=2+(7-1)*6=>
a_7=38

and a_15=2+(15-1)*6=>
a_1_5=86

User Ilya  Shevyryaev
by
8.4k points

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