Week 1 – My Arithmetic Sequence – Kylee's Blog

Week 1 – My Arithmetic Sequence

6, 10, 14, 18, 22…

How to find the 50th term, $t_{50}$ :

$t_n$ = $t_1$ +(n-1)d

$t_{50}$ =6+(50-1)(4)

$t_{50}$ =202

How to find the sum of the first 50 terms, $S_{50}$ :

$S_n$ = $\frac{n}{2}$ ( $t_1$ + $t_n$ )

$S_{50}$ = $\frac{50}{2}$ (6+202)

$S_{50}$ =5200

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