Given The Sequence 3, 1, -1, -3, ...,Find A12.

Given the sequence 3, 1, -1, -3, ...,find a12.

 

Answer:

a12=−19

Step-by-step explanation:

an=a1+(n-1)d

a1=3

d=-2

n=12

a12=3+(12-1)(-2)

a12=3+(11)(−2)

a12=3−22

a12=−19

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