dorianriddick0 dorianriddick0

06-08-2021
Mathematics

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Can someone help me please need the answer ASAP

Can someone help me please need the answer ASAP class=

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jimthompson5910 jimthompson5910

06-08-2021

Answer: 445.5 (choice C)

Work Shown:

[tex]S_n = \frac{n}{2}(a_1+a_n)\\\\S_{11} = \frac{11}{2}(8+73)\\\\S_{11} = 5.5(81)\\\\S_{11} = 445.5\\\\[/tex]

Adding the first 11 terms of this arithmetic sequence yields the sum 445.5

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