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

User El Ronnoco
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Hello,


r=-4\\ u_(1)=-1\\ u_(2)=-1+r\\ u_(3)=-1+2r\\\\ u_(40)=-1+39r=-1+39*(-4)=-1-156=-157\\

User Keylee
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