kcla1996
Is the sequence 5, 9, 15, ... an arithmetic sequence? Explain.



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helder_edwin
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if the difference of any two consecutive terms (\(d=a_na_{n1}\)) is constant, then it is a arithmetic sequence.

CliffSedge
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Compare 95 with 159.

kcla1996
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so it is an arithmetic sequence?

Edutopia
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use your brain...

kcla1996
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shut up i'm not good at maths

helder_edwin
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are 95 and 159 equal?

kcla1996
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no they are not equal. So i guess that means it isn't an arithmetic sequence. Can u explain why?

helder_edwin
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good.
that's why.
if the sequence were an arithmetic one, both differences are supposed to be equal.

kcla1996
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ok thank you