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Problem 655

If the 6 th term of an arithmetic progression is 8 and the \(11^{\text {th }}\) term is \(-2\), what is the 1 st term? What is the common difference?

Expert verified

The first term of the arithmetic progression is 18 and the common difference is -2.

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Chapter 22

Find the sum of the first 20 terms of the arithmetic progression $-9,-3,3, \ldots$

Chapter 22

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Chapter 22

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Chapter 22

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Chapter 22

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