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25-07-2021
Mathematics

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What is the nineteenth term of an arithmetic sequence with first term 9 and common difference 5?

Respuesta :

jimrgrant1 jimrgrant1

25-07-2021

Answer:

a₁₉ = 99

Step-by-step explanation:

The nth term of an arithmetic sequence is

[tex]a_{n}[/tex] = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = 9 and d = 5 , then

a₁₉ = 9 + (18 × 5) = 9 + 90 = 99

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