Which of the following represents the series? −13 + (−7) + (−1) + 5 + 11      b    c    d

Q: Evaluate. n=1 2n+4 7n

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Q: n- 1 Σ n = 1 .... ||

A: To find the given sum

Q: Find the sum of the first 18 terms of the series below . Clearly write down what you typed into your…

A: To find: The sum of the 18 term of the series -4+12-36+108+... Formula used: The sum of n terms of…

Q: 2- In an arithmetic series of 50 terms, the 17th term is 53 and the 28th term is 86. Determine, a, d…

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Q: 2+5+8+11+...293

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Q: Write t15 for the sequence − 3,−6,−12,−24,...

A: Given sequence is -3,-6,-12,-24...   The general term of a geometric sequence with first term a1a1…

Q: What is the 9th term of the sequence ªn =(−1)²”(n − 10), a

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Q: Find the sum of the first ten terms of the arithmetic series A1=7, d=-3

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Q: 2(-ャ) n=2

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Q: The first five terms of the sequence an = 5(-1/10)n-1

A: We need to find the first five terms of the sequence an = 5(-1/10)^(n-1)

Q: 7√5 +13√/5 =

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Q: Find the formula for the sequence below: -5,15,-45,180,...   a an=-3(-5)n-1 b an=5(3)n-1 c…

A: We have to find the formula

Q: find the sum of the first 25 terms of an arithmetic series if t12=-26 and t22=-46

A: We need to find the sum of first 25 terms of an Arithmetic series. We have t12=-26   and   t22=-46

Q: n-3/4+n+5/7=5/14

A: Given:

Q: an²+3n-2

A: The given series  Write the nth term an of the given series , Now, express the nth term an in…

Q: Find the sum: -5+-8+-11+...+-23 Answer:

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Q: List the first four terms of each sequence. an bn = -8n +9: = =(5)n. C₁ = 2, Cn = 2Cn-1 +1:

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Q: a =(−1)²¹ (n − 10)₂ - What is the 9th term of the sequence n

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Q: Evaluate (",) for n = 48.

A: Combination formula : nCr = n!/(n-r)!r!