anonymous
  • anonymous
Is the sequence 5, 9, 15, ... an arithmetic sequence? Explain.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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helder_edwin
  • helder_edwin
if the difference of any two consecutive terms (\(d=a_n-a_{n-1}\)) is constant, then it is a arithmetic sequence.
anonymous
  • anonymous
Compare 9-5 with 15-9.
anonymous
  • anonymous
so it is an arithmetic sequence?

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anonymous
  • anonymous
use your brain...
anonymous
  • anonymous
shut up i'm not good at maths
helder_edwin
  • helder_edwin
are 9-5 and 15-9 equal?
anonymous
  • anonymous
no they are not equal. So i guess that means it isn't an arithmetic sequence. Can u explain why?
helder_edwin
  • helder_edwin
good. that's why. if the sequence were an arithmetic one, both differences are supposed to be equal.
anonymous
  • anonymous
ok thank you

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