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kcla1996

  • 3 years ago

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

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  1. helder_edwin
    • 3 years ago
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    if the difference of any two consecutive terms (\(d=a_n-a_{n-1}\)) is constant, then it is a arithmetic sequence.

  2. CliffSedge
    • 3 years ago
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    Compare 9-5 with 15-9.

  3. kcla1996
    • 3 years ago
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    so it is an arithmetic sequence?

  4. Edutopia
    • 3 years ago
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    use your brain...

  5. kcla1996
    • 3 years ago
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    shut up i'm not good at maths

  6. helder_edwin
    • 3 years ago
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    are 9-5 and 15-9 equal?

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

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

  9. kcla1996
    • 3 years ago
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    ok thank you

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