February 4, 2018 – Jacob's Blog

Week 1 my arithmetic sequence

jacobs2015 on February 4, 2018February 5, 2018

$10,20,30,40,50$ …

Part 1:

latex t_{n}= t1+(n-1)d

$t_{n}= 10+ (n-1)10$ $t_{n}= 10+ 10n-10$ $t_{n}= 10_n$

$t_{50}$ = 10+(49)10 = 500

Part 2:

$S_{50}$ = $\frac{50}{2}$ (2(10)+(50-1)(10) = 12750