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3 years ago

10

The answer please please A.45 B. 50 C.39.5 D. 47.5

1 answer:

7nadin3 [17]3 years ago

8 0

Answer:

D. area=47.5

Step-by-step explanation:

3.5+5+7+32

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Step-by-step explanation:

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Find the sum of this arithmetic series.<br> | 26 + 24.5 + 23 + 21.5 + ... - 17.5

emmainna [20.7K]

Answer:

127.5

Step-by-step explanation:

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The last term of the series is -17.5

The nth term is given by:

$u_n=a+d(n-1)$

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The sum of the series:

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$S_{30}=127.5$

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