question archive 1) Determine the sum of the first 10 terms of the arithmetic series 20+30+40+
1) Determine the sum of the first 10 terms of the arithmetic series 20+30+40+
Subject:MathPrice: Bought3
1) Determine the sum of the first 10 terms of the arithmetic series 20+30+40+...
2) In a geometric series, the first term is 108 and the common ratio is 2/3 . Find the sum of the first 8 terms.
3) Find the sum of the geometric series 1/125-1/25-+1/5+...+125
4) The sum of the arithmetic series 2+4+6+8+... is 600. How many terms are in the series?
5) A large school board established a phone tree to contact all of its employees in case of emergencies or inclement weather. Each of the three superintendents calls three employees who each in turn calls three other employees and so on. How many rounds of phone calls are needed to notify all 9840 employees?
