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kiara23

  • 4 years ago

what is the sum of a 7-term geometric series if the first term is -6, the last term is -24,576, and the common ratio is -4?

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  1. moneybird
    • 4 years ago
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    Use the formula for geometric series

  2. moneybird
    • 4 years ago
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    |dw:1325898602441:dw|

  3. kiara23
    • 4 years ago
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    whats the a and whats the r ?

  4. moneybird
    • 4 years ago
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    a is first term, r is common ratio, n is the number of terms

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