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What is the sum of a 58-term arithmetic sequence where the first term is 6 and the last term is 405? 11,097 11,508 11,919 12,330

What is the sum of a 58-term arithmetic sequence where the first term is 6 and the last term is 405? 11,097 11,508 11,919 12,330
172k views
4 votes
What is the sum of a 58-term arithmetic sequence where the first term is 6 and the last term is 405?

11,097
11,508
11,919
12,330

User Chris Harcourt
by
7.8k points

2 Answers

0 votes

Answer:

11,919

Explanation:

took the test

User TechArcSri
by
8.1k points
1 vote
Given:
58 - term
first term : 6
last term : 405

Sum = n * (a+l)/2
Sum = 58 * (6 + 405)/2
Sum = 58 * 411/2
Sum = 58 * 205.5
Sum = 11,919
User Sandeep Mukherjee
by
8.1k points
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