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3 years ago

Find the 40th term of the arithmetic sequence. -1, -5, -9, -13, -17,

Mathematics

1 answer:

Artemon [7]3 years ago

3 0

Hello,

$r=-4\\
 u_{1}=-1\\
 u_{2}=-1+r\\
 u_{3}=-1+2r\\\\

 u_{40}=-1+39r=-1+39*(-4)=-1-156=-157\\$

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Step-by-step explanation:

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