Question #48769

1 Answer
Aug 2, 2017

24.5

Explanation:

arn1=an

ar2=8
ar4=14

ar4ar2=148
r2=74
r=74

Method 1:
a7=ar6=ar4r2=1474=24.5

Method 2:
ar2=8
a(74)=8
a=8(47)=4.57142857
ar6=4.57142857(74)6=24.5