find the sum of the arithmetic sequence with first term 12 last term 90 and 14 terms
Answer (1)
Answer: S<sub>14</sub> = 14/2 * (12 + 90) = 7 * 102 = 714Therefore, the sum of the arithmetic sequence is \(\boxed{714}\)Step-by-step explanation:
Answer: S<sub>14</sub> = 14/2 * (12 + 90) = 7 * 102 = 714Therefore, the sum of the arithmetic sequence is \(\boxed{714}\)Step-by-step explanation:
