patrickfutrell4261 patrickfutrell4261

25-11-2021
Mathematics

contestada

Find the term of the arithmetic sequence in which a 27=-1/2 and the common difference is 2.

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reinhard10158 reinhard10158

28-11-2021

Step-by-step explanation:

arithmetic sequence means that every new term is created by adding a certain constant (here 2) to the previous term.

a27 = -1/2 = a1 + (n-1)×2 = a1 + 26×2 = a1 + 52

a1 = -52 1/2 = -105/2

an = -105/2 + (n-1)×2

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