MichaelaE MichaelaE

15-07-2017
Mathematics

contestada

Identify the 19th term of the arithmetic sequence 5, 16, 27 …

Respuesta :

RickyChen RickyChen

15-07-2017

This sequence is represented as:

a(n+1) = 5 + 11n

So for 19th term, a(19) = 5 + 11*(19-1) = 203

Answer Link

15-07-2017

an = a1 + (n -1)(d)
where a1 is the first term and d is the common difference.
a19 = 5 + (19 - 1)(11)
a19 = 5 + (18)(11)
a19 = 5 + 198
a19 = 203

Answer Link

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