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anonymous

  • one year ago

What is the fifth term of the sequence whose first term is 10 and whose common ratio is ? a. 160 b. 50 c. 12 d. 5/8

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  1. anonymous
    • one year ago
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    The common ratio is 1/2

  2. rishavraj
    • one year ago
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    okay then \[a_5 = a_1 \times r^{5- 1}\]

  3. rishavraj
    • one year ago
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    plug a_1 i.e first term and r i.e common ratio

  4. anonymous
    • one year ago
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    what do all the letters stand for? :(

  5. anonymous
    • one year ago
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    ohhhhh

  6. rishavraj
    • one year ago
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    see the nth term in geometric sequence is \[a_n = a_1 \times r^{n - 1}\]

  7. anonymous
    • one year ago
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    Thanks i got it D was the answer!!

  8. rishavraj
    • one year ago
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    yup correct.... :))

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