Please answer asap!!! i need help w these

Mathematics

1 answer:

Paladinen [302]2 years ago

5 0

The common difference on the sequence is -3 and the number of books will be 21.

<h3>How to illustrate the sequence?</h3>

The formula that can be used to calculate the number of books will be:

= a + (n - 1)d

= 57 + (13 - 1)-

= 57 + (12 × -3)

= 57 - 36

= 21

Also, from the information given, each row has three fewer books than the row below it. Therefore, the common difference is -3.

Learn more about sequence on:

brainly.com/question/1275192

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