Which answer represents the series in sigma notation?

1 answer:

8 0

$\displaystyle\sum_{j=1}^7\left(\frac14\right)^{j-1}$

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Levart [38]

Answer:

C and E

Step-by-step explanation:

JUST MULTYPLY:):):)

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Serhud [2]

Answer:

Step-by-step explanation:

64+52=118 studied in the cafeteria or lounge

but 20 studied in both, so 118-20 = 98 studied there in total

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zmey [24]

Answer:

n=3

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This done by factorizing thier powers.

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Scrat [10]

I’m not sure but hi :)

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Kay [80]

1 $\frac{1}{7}$

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