Thursday
March 23, 2017

Post a New Question

Posted by on Thursday, March 7, 2013 at 2:43pm.

The sum of the first 10 terms of an arithmetic series is 145 and the sum of its fourth and ninth term is five times the third the..determine the first term and constant difference

  • math - , Thursday, March 7, 2013 at 3:30pm

    10/2(2a+9d) = 145
    a+3d + a+8d = 5(a+2d)
    a=1
    d=3

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question