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Momo

  • 5 years ago

What is the fifth term of a recursive sequence that follows the pattern 2x and has a first term x = 1? i think it is 2

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  1. myininaya
    • 5 years ago
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    for x=1, 2x=2(1)=2 for x=2, 2x=2(2)=4 for x=3, 2x=2(3)=6 for x=4, 2x=2(4)=8 for x=5, 2x=2(5)=10 so you saying your pattern is 2,4,6,8,___ what goes in that blank, right? the 5th term is 10

  2. myininaya
    • 5 years ago
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    i think i don't really understand your question

  3. myininaya
    • 5 years ago
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    if your first term is 1, how could it follow a 2x pattern unless it started with x=1/2 but x=1 2x=1 when x=1/2 not x=1 so i'm not sure of the question

  4. momo
    • 5 years ago
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    the options are 2, 4, 8, and 16

  5. dumbcow
    • 5 years ago
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    i think 2x means multiply by 2 each time 1,2,4,8,16...

  6. dumbcow
    • 5 years ago
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    or an = 2^n

  7. momo
    • 5 years ago
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    well, to me, the answer to be 2 makes sense. i just want to know if i'm right lol

  8. myininaya
    • 5 years ago
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    well i don't think it would be 2 cow seems to have the right answer above

  9. dumbcow
    • 5 years ago
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    no the 5th term is 16 1,2,4,8,16...

  10. momo
    • 5 years ago
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    oh okay, i guess i misunderstood the question. thanks :)

  11. dumbcow
    • 5 years ago
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    if they are asking for common ratio then you are correct it is 2

  12. momo
    • 5 years ago
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    yeah, i think that's what i was confused with. thank you so much!

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