ItsAlix13
Answered

Determine if the sequence is arithmetic or geometric. Then find the next term in the sequence. Select all that apply. 1, -4, 16, -64, …

  1. arithmetic
  2. geometric
  3. 128
  4. 256

Verified Answer :

caylus

Hello,

\(u_{1} =1\\\\ u_{2} =-4=1*(-4)= u_{1} *(-4)\\\\ u_{3} =16=(-4)*(-4)= u_{2} *(-4)\\\\ u_{4} =-64=16*(-4)= u_{3} *(-4)\\\\ u_{5} =(-64)*(-4)= 256=u_{4} *(-4)\\\\\)
The sequence is geometric of ratio -4.

Answer 2 and 4 are good. others false

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