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ThalindaKKosre
ThalindaKKosre ThalindaKKosre
  • 10-06-2016
  • Mathematics
Answered

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

-20.5

-151

-22.75

-144

Verified Answer :

HomertheGenius
HomertheGenius HomertheGenius
  • 11-06-2016

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

Answer Link
y2pnhh89rz y2pnhh89rz
  • 19-03-2021

Answer:

d) -144

Step-by-step explanation:

Answer Link

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