What is the sum of the arithmetic sequence 8, 14, 20 ..., if there are 22 terms?
2 answers:
Answer: I'm pretty sure its 1562
Answer:
The sum of 22 terms of given AP = 1562
Step-by-step explanation:
Formula:-
Sum of n terms of AP,
Sₙ= (n/2)[2a + (n - 1)d]
<u>To find the sum of 22 terms</u>
Here. a = 8, d = 6 and n = 22
Sₙ= (n/2)[2a + (n - 1)d]
S₂₂ = (22/2)[2*8 + (22 - 1)*6]
= 11[16 + 126] = 11 * 142 = 1562
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