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hichkok12 [17]
2 years ago
15

What is the 20th term of the linear sequence?1,7,13,19,25

Mathematics
1 answer:
Nimfa-mama [501]2 years ago
4 0

Answer:

115

Step-by-step explanation:

There is a common difference d between consecutive terms, that is

d = 7 - 1 = 13 - 7 = 19 - 13 = 25 - 19 = 6

This indicates the sequence is arithmetic with n th term

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = 1 and d = 6 , thus

a₂₀ = 1 + (19 × 6) = 1 + 114 = 115

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