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Phantasy [73]
3 years ago
9

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
Mathematics
1 answer:
Tcecarenko [31]3 years ago
7 0
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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