Find the sum of the given infinite geometric series. a, =-20, a, =-1620, r = 3 =-20, a 5 %3D -800 -4100 -1220 D -2420

Q: A. Write the first four terms of the geometric sequence in which a, and r are as follows: 1. a, =7,…

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Q: List the first five terms of the sequence. an = cos 2.

A: Put n=1,2,3,4,5 in an=cosnπ2. For n=1, a1=cosπ2     =0 For n=2, a2=cos2π2     =cosπ     =-1

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

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Q: Find the first 5 terms of each sequence. 1. а, %3D 1, а, 3 3 (а-1) 2. a, = 2, an =2 (an-1 + 1) – 5…

A: By given  relation  we can find the term of sequence

Q: The sequence has eight terms. Evaluate the related series. If your answer includes a negative, enter…

A: Given:         The sequence is -3.5,-1.25,1,...,12.25          The sequence is arithmetic  where…

Q: 25. Σ(3n+5) nel

A: Given: ∑n=113 3n+5 Substituting the value of n=1, 2, 3...., we get ∑n=113 3n+5=3×1+5=8∑n=113…

Q: Find a formula for an for the arithmetic sequence. aj = 0, d=- a. 4 An=3n- 3 b. An=- 4 An=-n с. d. 4…

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

Q: Find the sum of the first 6 terms of the given geometric series: -2-4-8-16.. O -146 -139 O 2 O -126

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Q: th he nº" term of a sequence is given. Find the indicated term. Express your answer in simplest…

A: Topic:-  algebra

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: Find the 10th term of the arithmetic sequence in which a1=12 and d = 9.1.

A: It is given that, a1=12d=9.1   It is known that nth term of arithmetic sequence can be found  by…

Q: Find the sum of each geometric series. 1. 36+6+1+...; S10 2. a1=1, r=4; S6

A: Find the sum of each geometric series.  1. 36+6+1+...; S10 2. a1=1, r=4; S6

Q: Find the sum of each geometric series. S5; a1 = 6, r = 3 S6; a1 = 8, r = S6 1 3.

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Q: Find a4 when a₁ = 3 and r = - 2 Select one: O a. - 16 O b. 16 O c. 24 O d. - 24

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Q: 1. Find the first, second, and sixth terms of the sequence an=4n-2

A: we have to find the first , second and sixth term of the given sequence

Q: -7,-30,-122,... O4=4(a)-2 %3D (a) +a;n23 an a, = 6(a) %3D a =7-a1

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Q: 2. 5, 7,9, .. , 27

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Q: [2] Find the infinite sum S below consisting of the terms of a geometric sequence. 1 S= -- -+ 4 8.…

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Q: Write the first five terms of | 1 2 3 4 5 each geometric sequence 1).a, = 3, r = 5 2)a, = 10, r = -4…

A: Given that we have to find the first fiver term of each geometric sequence

Q: write the first five terms of the arithmetic series given two terms. step by step please

A: Given informationSeries is arithmetic series