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1 vote
Complete the recursive formula of the arithmetic sequence −5,−25,−45,−65,...

2 Answers

1 vote

Answer:

a

n

=

20

n

+

15

an=-20n+15

Explanation:

Use a Formula

User Thomas Oellrich
by
6.7k points
6 votes

The recursive formula is

a[1] = -5

a[n] = a[n-1] - 20

The recursive part is the last equation.

User Afrederick
by
7.0k points