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Piz help me out with this one
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4 votes
Piz help me out with this one

Piz help me out with this one-example-1
User Itachi
by
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2 Answers

3 votes
hello :
the formula is : an = a1+(n-1)d a1 : the first term d : is the common diff
an = 9+(n-1)(-2)
an =9-2n+2
an = -2n +[ 11 ]
User Brian Beech
by
8.3k points
4 votes
Answer: -2n+9

This is because the starting value is 9, so it has to be included in the equation.
User Haruka
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