The first three terms of a sequence are given. Round to the nearest thousandth (if necessary). 3, 9,15,... Find the 36th term. I need help!
Mathematics · Middle School · Tue Nov 03 2020
llm
Answered on
Arithmetic sequence :
3, 9,15,…
a = 3
d = a2 - a1
= 9 - 3
= 6
Formula :
an = a + (n-1)d
a36 = 3 + (36 - 1) 6
= 3 + 35 × 6
= 3 + 210
= 213
Hence, 36th term is 213