Find the sum of the first 15 terms of the arithmetic sequence whose general term is given by the equation an= 4n=3.
pasagot po please.
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Find the sum of the first 15 terms of the arithmetic sequence whose general term is given by the equation an= 4n=3.
pasagot po please.
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Answer:
435
Step-by-step explanation:
an=4n-3 a1 +nd so a1 = -3 d= 4 then S15= 15(a1+a15) and kuwit 2 = 15a8 = 15(4x3-3) so 435.
Sana makatulong. :) God bless.