ThalindaKKosre ThalindaKKosre

10-06-2016
Mathematics

contestada

Identify the 27th term of an arithmetic sequence where a1 = 38 and a17 = -74.
-20.5
-151
-22.75
-144

Respuesta :

HomertheGenius HomertheGenius

11-06-2016

Arithmetic sequence:
an=a1+(n-1)d
[tex] a_{17}= a_{1}+16d -74=38 + 16d 16d=-74-38 16d=-112 [/tex]
d=-112/16=-7
[tex] a_{27}=a_{1} + 26d=38+26*(-7)=38-182=-144[/tex]
Answer: D)-144

Answer Link

y2pnhh89rz y2pnhh89rz

19-03-2021

Answer:

d) -144

Step-by-step explanation:

Answer Link

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