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anonymous

  • one year ago

NEED HELP!!!!! Which of these sequences is a geometric sequence? A. 1, 2, 4, 7, 11, 16, 22, … B. 2, 4, 8, 14, 22, 38, … C. 3, 6, 9, 12, 15, 18, 21, … D. 3, 9, 27, 81, 343, 729, …

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  1. Mehek14
    • one year ago
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    which one do you think?

  2. anonymous
    • one year ago
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    c

  3. Mehek14
    • one year ago
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    it is not C because they are not being multiplied by the same number \(3*2 = 6\\ 6*1.5 = 9\) and so on

  4. Mehek14
    • one year ago
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    a geometric sequence is where each term after the first is found by multiplying the previous one by the same number

  5. anonymous
    • one year ago
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    A! RIGHT

  6. Mehek14
    • one year ago
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    \(1*2=2\\2*2=4\\4*2=8~not~7\)

  7. Mehek14
    • one year ago
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    the pattern in A is \(1+1=2\\2+2=4\\4+3=7\\7+4=11\)

  8. anonymous
    • one year ago
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    d!! new I should of whent with my gut

  9. Mehek14
    • one year ago
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    yes D they increase by \(*3\) each time

  10. anonymous
    • one year ago
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    thx I have more questions though can you help me with them

  11. Mehek14
    • one year ago
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    sure post separately

  12. anonymous
    • one year ago
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    k

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