SOLUTION: a. Given the arithmetic sequence: 100, 200, 300, 400 ,..,. Find i. The 10th term, ii. The 15th term, iii. The sum of terms from the 5th to the 12th inclusive.

Algebra ->  Sequences-and-series -> SOLUTION: a. Given the arithmetic sequence: 100, 200, 300, 400 ,..,. Find i. The 10th term, ii. The 15th term, iii. The sum of terms from the 5th to the 12th inclusive.       Log On


   

Question 1179818: a. Given the arithmetic sequence: 100, 200, 300, 400 ,..,. Find
i. The 10th term,
ii. The 15th term,
iii. The sum of terms from the 5th to the 12th inclusive.
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
i. and ii. are plainly obvious.

iii.
500%2B600%2B700%2B800%2B900%2B1000%2B1100%2B1200
Do you see, 4%2A%28500%2B1200%29 ?