7th Grade Math for Steve.. or Ms. Sue
posted by Gabby on .
Determine whether each sequence is arithmetic or geometric. Find the next three terms.
1.
14, 19, 24, 29, . . . (1 point)
geometric, 34, 39, 44
arithmetic, 32, 36, 41
arithmetic, 34, 39, 44 **
The sequence is neither geometric nor arithmetic.
2.
–4, 8, –16, 32, . . . (1 point)
arithmetic, 64, 128, 256
geometric, –64, 128, –256 **
geometric, –48, 64, –80
The sequence is neither geometric nor arithmetic.
3.
81, 27, 9, 3, . . . (1 point)
arithmetic, 0, –3, –6
geometric, 0, –3, –6
geometric, 1, onethird, oneninth
The sequence is neither geometric nor arithmetic. **
Find the next three terms in the sequence.
4.
3, 12, 21, 30, .... (1 point)
40, 50, 60
38, 46, 54
39, 48, 57 **
36, 32, 39
5.
30, 22, 14, 6, .... (1 point)
3, –12, –21
–1, –8, –15 **
–1, –2, 3
–2, –10, –18
Ok I put 2 stars next to my answer plz tell me if I'm wrong or correct :)

Steve.. Ms. Sue??? Reiny?? could you help.. I made sure too put my answers in...

#3  geometric, common ratio = 1/3
next 3 terms: 1 , 1/3 , 1/9
#5 , AS , common difference is 8
so next 3 terms
2 , 10, 18
the others are correct 
1. armtc is's 34,39,44

3 is 1, 1/3, 1/9

1 is arthic 34 39 44
2 is 64 138 256
3 is geometric 1 1/3 1/9
4 is 39 48 57
5 is 2 10 18
100% correct i got them right 
1.) C
2.) B
3.) C
4.) B
5.) D