kyleighfaust02 kyleighfaust02
  • 08-07-2020
  • Mathematics
contestada

Find the third term in a geometric sequence if a = 8 and r = -1. Use the formula a(subscript n) = arⁿ⁻¹

Respuesta :

ujalakhan18
ujalakhan18 ujalakhan18
  • 08-07-2020

Answer:

[tex]a_{3} = 8[/tex]

Step-by-step explanation:

=> [tex]a_{n} = ar^{n-1[/tex]

Where n = 3, a = 8 and r = -1

=> [tex]a_{3} = (8)(-1)^{3-1}[/tex]

=> [tex]a_{3} = (8)(1)[/tex]

=> [tex]a_{3} = 8[/tex]

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