Q#10 For each of the following sequences: 1. Identify if the sequence is arithmetic, geometric, or quadratic. Explain why. 2. If it is arithmetic or geometric, give an expression for the sum of the first 20 terms in the sequence. Show your work and any formulas used. You do not need to evaluate this expression. If it is quadratic, determine a formula for the i-th term in the sequence and show your work. A. 4, -8, 16, -32, . В. 9, 12, 18, 27, ...

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Q: What is a for the sequence a₁ = n² - n? A. a₁ = 8 B. a = 12 C. a = 4 D. a₁ = 16 OA OB OC OD

A: Here is the solution:

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A: Given first term = a1= 0 and common difference = d= -4/5

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Q: Write the rule as an equation. In each of the following sequences, Fill in the missing numbers ● ●…

A: according to bartleby policy we do only first part of multiple questionsthere for please re post…

Sequence and Series

A sequence is defined as a collection of things. Series is defined to sum the things one by one in the sequence.  It was invented by German mathematician Carl Friedrich Gauss.