What is the sum of the first 30 terms of this arithmetic sequence? 6, 13, 20, 27, 34, … A. 3,225 B. 3,255 C. 3,325 D. 3,525
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3
Answer:
given A.P with a = 6 and d = 7
to find sum of first 30 terms S₃₀ = n/2 [2a + (n-1)d]
S₃₀ = 30/2 [ 2 x 6 + (30 - 1) x 7 ]
=> 15 [ 12 + 29 x 7 ]
=> 15 [ 12 + 203 ]
=> 15 x 215
=> 3225
Answered by
0
Answer:
Hey mate here is the answer for your question......
The answer for this question is 3225.......
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