If the nth term of a sequence is (-1)"+1, which terms are positive and which are negative? п

Q: Find the sum of the first 25 terms of the arithmetic sequence: 7, 19, 31, 43, .....

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Q: The sum of the first n terms of a geometric sequence is 341. If aj = and a4 , what is the value of…

A: 1. Geometric progression (GP) is a type of sequence where each succeeding term is produced by…

Q: Find the sum of the first eight terms of the arithmetic sequence in which the fourth term is 9 and…

A: a4=9  &  d=-5 Now consider, a4=9⇒a+3d=9⇒a+3-5=9⇒a=24

Q: Find the sum of the first 130 terms of the arithmetic sequence 8, , 7, ....

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Q: Find the first 4 terms of the sequence with first term5 and nth term an = an-1 - 2.

A: Given: The first term of the sequence, a1 =5 And the nth term,…

Q: Find the sum of the first 40 terms of the arithmetic sequence whose first term is −15 and whose…

A: Given,         The sum of the first 40 terms of the arithmetic sequence whose first term is −15 and…

Q: If the fourth term of an arithmetic sequence is 13 and the second term is 3, find the 24th term.

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Q: m of the first 10 terms in an arithmetic

A: Given, the sum of the first 10 terms in an arithmetic sequence is 530.

Q: Find the sum of the first 12 terms of the sequence3, 6, 9, ......

A: The given sequence is 3, 6, 9, ......

Q: What is the sum of the first 10 terms of the sequence {300, 150, 75, ...}?

A: Given: 300,150,75,...... Formula Used: Sn=a1-rn1-r

Q: Find the 38th term of a sequence where the 15th term is 0 and the common difference is 1.

A: see below the answer  here we have use the sequence  as arithmetic sequence

Q: Find the first term and the common difference of the arithmetic sequence whose 9th term is – 28 and…

A: To find: The first term and common difference of the arithmetic sequence. Given: The 9th term of the…

Q: Find the sum of the first 28 terms of the arithmetic sequence. 36, 44, 52, 60, .. What is the sum of…

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Q: Find the sum of the first 37 terms of the arithmetic sequence. 29, 36, 43, 50,

A: Given,          The sum of the first 37 terms of the arthmetic sequence             29 , 36 , 43 ,…

Q: Find the 38th term of a sequence where the first term is −11 and the common difference is 2.

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Q: Find the 5th term of the arithmetic sequence whose 3rd term is 35 and whose 10th term is 77.

A: Let the first term is = a and common difference = d So, n th term of arithmetic sequence is given by…

Q: Find the next two terms in th. sequence. 8, 5, 2, -1, -4, [ ? ].[ ]

A: Given sequence is : 8, 5, 2, -1, -4 To find the next two terms in this sequence.

Q: The geometric mean between the first two terms in a geometric sequence is 32. If the third term is…

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Q: Find the sum of the first 20 terms of the arithmetic sequence:4, 10, 16, 22, . . . .

A: Given arithmetic sequence is: 4, 10, 16, 22, ..... The first term = a = 4 The common difference:…

Q: Find the sum of the first 40 terms of the sequence. {1, 6, 11, 16, …}

A: Given sequence is 1, 6, 11, 16, .......

Q: the 10th term of an arithmetic sequence is -4 and the 16th term is 47. what is the 11th term

A: Given  10th term of arithmetic sequence is -4 and 16th term of arithmetic sequence is 47.

Q: Find the sum of the first 13 terms of the arithmetic sequence. 5,9, 13, 17. . What is the sum of the…

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Q: Find the first four terms of the arithmetic sequence whose first term is 6 and whose common…

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Q: If the third term of an arithmetic sequence is 4 and the seventeenth term is -66​, find eighth the…

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Q: Find the first four terms of the arithmetic sequence whose first term is 9 and whose common…

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Q: Find the sum of the first 35 terms of the arithmetic sequence −1, −9, −17, −25, ….

A: Given the arithmetic series-1,-9,-17,-25..

Q: Find the sum of the first 18 terms of the geometric sequence: 2, -8, 32, -128, . . . .

A: The given geometric sequence: 2, -8, 32, -128 first term (a) = 2 common ratio r=ara=-82=-4 number of…

Q: Find the nth term of a sequence whose first several terms are give 3, 9, 27, 81, ... an

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Q: what is the 1st term of the arithmetic sequence if the 9th term is 84 and the 13th term is 44?

A: We have to find the first term of the arithmetic sequence if the 9th term is 84 and the 13th term is…

Q: If the sum of second and tenth terms of aritmetic sequence is equal to 12 , find sum of fourth,…

A: Given that the sum of second and tenth terms of arithmetic sequence is equal to 12.  Now in…

Q: given that the 1st and 9th terms of an arithmetic sequence as -2 and 22 respectively, find the…

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Q: what is the 10th term in an arithmetic sequence whose 3rd term is 17 and whose common difference is…

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Q: Find the 10th term of the geometric sequence. If your answer is a fraction, enter it like: 1/2, etc.…

A: I have given an answer in step 2.

Q: Find the nth term of a sequence whose first several terms are given. 4, -16, 64, -256, ... an II

A: nth term of sequence.

Q: Write the first five terms of the sequence with the given nth term. 2, - (-)" = a3 a5 2.

A: The objective is to write first five terms of the sequence with the given nth term.

Q: The first term of an arithmetic sequence is equal to 200 and the common difference is equal to -10.…

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Q: Find the 16th term of an arithmetic sequence if the first term is 26 and the common difference is .…

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Q: Find the first four terms and the eighth term of the sequence.

A: The given sequence is 2+-0.1n.

Q: If the 100th term of an arithmetic sequence is 213, and it's common difference 2, then what is the…

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Q: If the sum of second and tenth terms of arithmetic sequence is equal to 12, find sum of fourth,…

A: A sequence (an) is said to be arithmetic is a2-a1=a3-a2=a4-a3=...=d(say)That is, d=an-an-1 for…

Q: Find the sum of the first 11 terms of the geometric sequence: 7, -21, 63, -189, 567, . . . .

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Q: If the sum of second and tenth terms of aritmetic sequence is equal to 12, find sum of fourth, sixth…

A: We will find out the required value.

Q: Find the sum of the first 12 terms of the geometric sequence whose first term is 11 and whose common…

A: Given a geometric series with first term 11 and common ratio 5.

Q: Find the sum of the first 60 terms of the sequence. {2, 10, 18, 26, …}

A: Given sequence is 2, 10, 18, 26.........

Q: Find the first term and the common difference of the arithmetic sequence whose 9th term is – 17 and…

A: The general form of arithmetic sequence is a,a+d,a+2d,......,Where a  is the first term of the…

Q: How many terms of the arithmetic sequence 3,5,7... must be added together to get 899?

A: If you like the solution then please give it a thumbs up... The Answer is:       Terms =  n = 499

Q: Find the sum of the first 50 terms of the sequence 12, -12, 12, -12, ...*

A: Solution...

Q: Find the sum of the first 109 terms of the arithmetic sequence: 3, 7, 11, 15, 19, ..

A: Given : 3, 7, 11, 15, 19…