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Volgvan
2 years ago
5

Which Expression Can Be Used To Determine the nth term in the pattern below 20,25,30,35,40

Mathematics
1 answer:
maw [93]2 years ago
8 0

Answer:

see explanation

Step-by-step explanation:

These are the terms of an arithmetic sequence with n th term

a_{n} = a + (n - 1)d

where a is the first term and d the common difference

d = 25 - 20 = 30 - 25 = 5 and a = 20, hence

a_{n} = 20 + 5(n - 1) = 20 + 5n - 5 = 5n + 15 ← n th term formula

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