Find the sum of the first 10 terms of the arithmetic sequence when a₁=8 and d=7.
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Find the sum of the first 10 terms of the arithmetic sequence when a₁=8 and d=7.
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Answer:
8, 15, 22, 29, 36, 43, 50, 57, 64, 71,
Step-by-step explanation:
Cant put the exact formula here
a(n)=a(1)+(n-1)d
a(10)=a(8)+(10-1)7
=8+(9)7
=8+63
=71