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seraphim [82]
3 years ago
14

What is the sum of the arithmetic sequence 8, 14, 20 ..., if there are 22 terms?

Mathematics
2 answers:
timama [110]3 years ago
5 0

Answer: I'm pretty sure its 1562

prohojiy [21]3 years ago
3 0

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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