In an arithmetic sequence find S¹⁰ if a¹ = 3 and the common difference is 4.
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In an arithmetic sequence find S¹⁰ if a¹ = 3 and the common difference is 4.
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Answer:
S10=210
Step-by-step explanation:
Formula: Sn=(n/2(2a+(n-1)d)
> S10=10/2(2(3)+(10-1)4)
> S10=5(6+(9)4)
> S10=5(6+36)
> S10=5(42)
> S10=210