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the seventh term of an arithmetic sequence is 64 and the twenty sixth is 235. what is the sum of the first 15 terms

Posted 3 years ago by claresimon in Math 20-1 | 3 answers
#arithmetic sequences #geomentric series 

Determine the numbers of terms, n, and the sum, Sn, of the following series. 5+13+21+...+149.

Posted 3 years ago by claresimon in Math 20-1 | 3 answers
#arithmetic sequences 

the solution to 0 < (x+144) (x+67) is 

Posted 3 years ago by latifah in Math 20-1 | 2 answers
#inequalities