Math, asked by mahi4800, 11 months ago

The sequence a1,a2,a3,... satisfies a1 =19,a9=99,
and,for all n≥3,an is the arithmetic mean of the first n-1 terms. Find a2.

Answers

Answered by Anonymous

0

Answer:

Step-by-step explanation:

a1=19

a9=99

a+8d=99

19+8d=99

8d=99-19=80

d=10

a2=a1+d

=19+10

=29

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