SOLUTION: Find S30: {50,45,40,35...}

Algebra ->  Sequences-and-series -> SOLUTION: Find S30: {50,45,40,35...}      Log On


   

Question 1032906: Find S30: {50,45,40,35...}
Answer by ikleyn(52788) About Me  (Show Source):
You can put this solution on YOUR website!
.
Arithmetic progression with the first term 50 and the difference -5.
The sum of the first 30 members.

Apply the formula from the lesson Arithmetic progressions in this site.