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What is the sum of the arithmetic sequence 8,14,20... , if there are 22 terms? answers to choose from. a)1,558 b)1,560 c)1,562 d)1,564
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Jan 15, 2017
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What is the sum of the arithmetic sequence 8,14,20... , if there are 22 terms? answers to choose from.
a)1,558
b)1,560
c)1,562
d)1,564
Mathematics
high-school
Nikdeapen
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The common difference in this sequence is 6
The sum of n terms of an arithmetic sequence is given by:
S = n/2 [2a₁ + (n - 1)d]
S = 22/2 [2(8) + (22 - 1)(6)]
S = 1562
The answer is C
Satish Shinde
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Jan 20, 2017
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Satish Shinde
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