3 years ago

D(n)=-5(1/2)^n-1 what is the 3rd term in the sequence

Mathematics

1 answer:

Studentka2010 [4]3 years ago

7 0

Answer:

-1.25

Step-by-step explanation:

Better to write this as

a(n)= -5(1/2)^(n-1)

Then the 3rd term is a(3) = -5(1/2)^(3 - 1), or a(3) = -5(1/2)^2 = -5/4 = -1.25

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