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Well, since the nth term is 2n+6, therefore First term = 2(1)+6 =8
Second term is 2(2) +6 = 10
Third term is 2(3) +6 = 12
Hence, their some = S3=3(2(a)+(3-1)d)/2
====>3(2(8)+2(2))/2
====>3(20)/2=30
Which means that this is an arithmetic sequence where a=8 and d=2
What you need to do is replace (n) with the number of the term you want to find, and there is your answer.
What else can I help you with?
The nth term for n²-1?
5 first terms in n²+3
What is the first 5 terms in a sequence when given the nth term n 7?
If the nth term is n*7 then the first 5 terms are 7, 14, 21, 28, 35.
The nth term -4,-1,4,11,20,31?
14112027
What is the first 5 terms of the sequence with nth term 6n-1?
5, 11, 17, 23, 29
How do you find the 99th nth term in a geometric sequence?
The 99th term would be a times r to the 98th power ,where a is the first term and r is the common ratio of the terms.
What are the first five terms of the sequence whose nth term is N4 plus 225?
2,1,0 is th sequence of its terms
What are the first 4 terms of the sequence which has the nth term formula?
the first 4 terms of the sequence which has the nth term is a sequence of numbers that that goe together eg. 8,12,16,20,24 the nth term would be 4n+4
What it the first five terms of the sequence with an nth term of 8n plus 1?
9, 17, 25, 33, 41
What are the first five terms of the sequence whose nth term is give 3n plus 2?
5, 8, 11, 14 and 17.
The nth term for n²-1?
5 first terms in n²+3
What are the first five terms of the sequence with nth term is 7n + 3?
no clue
What is the sum of first six terms of a sequence whose nth term is 8 - n?
nth term is 8 - n. an = 8 - n, so the sequence is {7, 6, 5, 4, 3, 2,...} (this is a decreasing sequence since the successor term is smaller than the nth term). So, the sum of first six terms of the sequence is 27.
What is the first 5 terms in a sequence when given the nth term n 7?
If the nth term is n*7 then the first 5 terms are 7, 14, 21, 28, 35.
The nth term -4,-1,4,11,20,31?
14112027
Give the simple formula for the nth term of the following arithmetic sequence What if your answer will be of the form an plus b?
If the formula for additional terms was the summation of the term before it, the nth term of the series would be the sum of all terms prior. In other words it would be the summation of a through n minus 1.
What are the first four terms of a sequence and what term number is -32 when the nth term is 8 -2n?
If the nth term is 8 -2n then the 1st four terms are 6, 4, 2, 0 and -32 is the 20th term number
What are the first four terms of a sequence when the nth term equals 3 to the power of n and what term number is 729 in the sequence?
The first four terms are 3 9 27 81 and 729 is the 6th term.
