xxwhoisyou xxwhoisyou
  • 19-02-2021
  • Mathematics
contestada

Write an
explicit formula for
an,
then
th
term of the sequence 100, 20, 4, ....

Respuesta :

jcherry99
jcherry99 jcherry99
  • 19-02-2021

Answer:

Step-by-step explanation:

a1 = 100

r = 1/5

an = 100 (1/5)^(n - 1)

Try it. We have the answer for a_3

a_3 = 100 * (1/5)^(3 - 1)

a_3 = 100 * (1/5)^2

a_3 = 100 * 1/25

a_3 = 4  which is just what the series says should be the answer.

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