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this geometric sequence?
What is the explicit formula for
8, 4, 2, 1, ...

This Geometric Sequence What Is The Explicit Formula For 8 4 2 1 class=

Sagot :

Answer:

D

Step-by-step explanation:

the first term is 8, the ratio is 1/2 ( 8*1/2 = 4, 4*1/2 = 2, 2*1/2 = 1)

the formula for an explicit geometric formula is :

[tex]a_{n} = a_{1} * r^{(n-1)}[/tex]

plug in your numbers :

[tex]a_{n} = 8 * (\frac{1}{2}) ^{(n-1)}[/tex]

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