wrivera32802
16.10.2020 •
Mathematics
What is the sum of the arithmetic series 16∑t-1 (6t-4)
A. 1,504
B. 376
C. 752
D. 92
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Ответ:
Sum of an arithmetic sequence is given by the formula:
Sn = (a1 + an)*(n/2)
First term is 6(1) - 4 = 2
16th term is 6(16) - 4 = 92
(2+92)*(16/2) = 752
2. Use the same formula from above. (assuming the first term is when n = 1)
a1 = 2(1) - 3 = -1
a10 = 2(10) - 3 = 17
(-1+17)*(10/2) = 80
Step-by-step explanation:
Ответ:
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