keellyxoxo
keellyxoxo keellyxoxo
  • 23-01-2018
  • Mathematics
contestada

HELP ILL MARK BRAINLEST

HELP ILL MARK BRAINLEST class=

Respuesta :

jimthompson5910 jimthompson5910
  • 23-01-2018
Answer: -1280

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Work Shown:

a(n) = a*r^(n-1)
a(n) = -10*2^(n-1)
a(8) = -10*2^(8-1)
a(8) = -10*2^7
a(8) = -10*128
a(8) = -1280

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