nicholasrinehart07 nicholasrinehart07

25-03-2022
Mathematics

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Given the sequence, 3, -9,27,-81 ...
What is the 15th term, assuming the pattern continues

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isalep93 isalep93

25-03-2022

Fist : 3

then

second : x (-3) = - 9

third : x (-3) = 27

x (-3) = - 81

the 15 term ?

first one = 3 x (-3)⁰

second one = 3 x (-3)¹

third one = 3 x (-3)²

so n one = 3 x (-3)ⁿ⁻¹

then the 15th one = 3 x (-3)¹⁴

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