I have been working on a math packet for the last hour and still can't figure out the answer to these last few questions. Help and explaination greatly appreciated!
Are these sequences arithmetic, geometric, or neither:
36,-12,4,-4/3
72,24,12,3
Please explain how you arrived at your answer. Thanks!
2007-01-17 11:18:08 · 9 answers · asked by theatreis4life 2 in Education & Reference ➔ Homework Help
The first one is definitely geometric:
(36)(-1/3)^(n-1) is the nth term
The second is neither arithmetic nor geometric:
There is an arithmetic difference of:
-48, -12, -9
There is a geometric difference of:
* 1/3, *1/2, *1/4
As far as I can tell, there isn't a formula to describe this pattern. But, I'll keep working on it just in case.
2007-01-17 11:30:32 · answer #1 · answered by Ace 4 · 0⤊ 1⤋
1) This sequence is geometric, since you divide the subsequent number by -3.
2) This sequence is geometric, since you divide the subsequent number by 4.
This would be an arithmetic series: 4, 7, 10, 13, ___ as you are ADDING by 3.
2007-01-17 11:31:10 · answer #2 · answered by Anonymous · 0⤊ 0⤋
an arithmetic sequence is one in which you add one specific number to get the next number. a geometric sequence in one in which you multiply one specific number to get the next number.
the first is geometric since you mutilply all your #s by 1/3 to get the next number.
i believe the second equation is neither since you can neither add or multiply one number to get the next number
2007-01-17 11:33:23 · answer #3 · answered by diamond 3 · 0⤊ 0⤋
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2017-01-01 08:18:25 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Im pretty sure both of these are geometric, i learned this last year and i dont remember exactly, but it looks like geometric
2007-01-17 11:28:24 · answer #5 · answered by shelby98764321 1 · 0⤊ 0⤋
the first one is geometric
to get to the next numbet *by -4, since the diffrence is inconstant and changing (but the rules to the pattern stay the same) it is geometric
the next one is neither i believe
there is no direct corrolation between the answers
2007-01-17 11:40:37 · answer #6 · answered by son_of_charon 1 · 0⤊ 0⤋
divided by -3 is the first one
2007-01-17 11:27:50 · answer #7 · answered by Caroline B 2 · 0⤊ 0⤋
it is so cool I'm doing the same thing in math too but i need help too.
2007-01-17 11:28:37 · answer #8 · answered by hermanda z 3 · 0⤊ 0⤋
definately geometric... if u ask me, it's simple geometry
2007-01-17 11:30:18 · answer #9 · answered by Anonymous · 0⤊ 0⤋