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saul85 [17]
3 years ago
7

Find the nth term of this number sequence 1, 10, 19, 28, ... Pls help

Mathematics
2 answers:
dalvyx [7]3 years ago
8 0

Answer:

The nth term = 9n - 8.

Step-by-step explanation:

This is an Arithmetic Sequence with common difference d =

10 - 1 = 19 - 10 = 28 - 19 = 9.

The nth term an = a1 + (n - 1)d where a1 = the first term and d = the common difference.

So the nth term = 1 + (n - 1)9

= 1  + 9n - 9

= 9n - 8.

kherson [118]3 years ago
5 0

Answer:

9n - 8

Step-by-step explanation:

The sequence is arithmetic since the difference between consecutive terms is common

d = 10 - 1 = 19 - 10 = 28 - 19 = 9

The n th term of an arithmetic sequence is

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

here a₁ = 1 and d = 9, thus

a_{n} = 1 + 9(n - 1) = 1 + 9n - 9 = 9n - 8, hence

a_{n} = 9n - 8

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