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xJai

  • 3 years ago

A store displays six computers on a shelf side–by–side. Find the total length of the computers on the table if the first computer was seven inches wide and the width of each successive computer is two inches longer than the previous one. Show all your work and describe the sigma notation used in answering the question above.

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  1. moneybird
    • 3 years ago
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    First computer is 7 second is 7 + 2 third is 7+2 +2 fourth 7 +2 +2 +2 nth is 7 + 2(n-1)

  2. moneybird
    • 3 years ago
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    \[\sum_{n=1}^{6} 7 + 2(n-1)\]

  3. moneybird
    • 3 years ago
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    7 + 9+ 11 + 13 + 15 + 17 = 72

  4. xJai
    • 3 years ago
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    Ty :)

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