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For an arithmetic sequence where a 1 = 17 and the common difference is 5, find s 7 . A. 219 B. 235 C. 229 D. 224

For an arithmetic sequence where a 1 = 17 and the common difference is 5, find s 7 . A. 219 B. 235 C. 229 D. 224
asked 106k views
1 vote
For an arithmetic sequence where a 1

= 17 and the common difference is 5, find s 7
.
A. 219
B. 235
C. 229
D. 224

asked
User Joe Friedrichsen
by
8.3k points

2 Answers

0 votes
s7 = (7/2)[2*17 + (7-1)*5]

= 3.5 * (34 + 30)

= 3.5 * 68 = 224 answer

D
answered
User Gavrilo Adamovic
by
8.5k points
5 votes
The correct answer is C. 224
answered
User I Bajwa PHD
by
8.7k points
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