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Can someone help me please need the answer ASAP
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Can someone help me please need the answer ASAP

Can someone help me please need the answer ASAP-example-1
User Bwindels
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5 votes

Answer: 445.5 (choice C)

Work Shown:


S_n = (n)/(2)(a_1+a_n)\\\\S_(11) = (11)/(2)(8+73)\\\\S_(11) = 5.5(81)\\\\S_(11) = 445.5\\\\

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

User Farwa
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