Alberto is stacking firewood. He puts 20 logs on the bottom row. Then he stacks each row so that there is 1 fewer log than the row below. Which of the following is formed by the number of logs in 10 rows?

A. an arithmetic series

B. an arithmetic sequence

C. a geometric series

D. a geometric sequence

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Mathematics

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Alberto is stacking firewood. He puts 20 logs on the bottom row. Then he stacks each row so that there is 1 fewer log than the row below. Which of the following is formed by the number of logs in 10 rows?

A. an arithmetic series

B. an arithmetic sequence

C. a geometric series

D. a geometric sequence

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Answers (1)

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Vance Spencer · Answer 1

This would be A) an arithmetic series.

The number of logs in each row would give an arithmetic sequence, as it decreases by 1 each time.

Finding the total number of logs in 10 rows would be finding the sum, which makes it an arithmetic series.

Alberto is stacking firewood. He puts 20 logs on the bottom row. Then he stacks each row so that there is 1 fewer log than the row below. Which of the following is formed by the number of logs in 10 rows?A. an arithmetic seriesB. an arithmetic sequenceC. a geometric seriesD. a geometric sequence