7th Grade Math for Steve.. or Ms. Sue

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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, one-third, one-ninth
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 :)

  • 7th Grade Math for Steve.. or Ms. Sue -

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

  • 7th Grade Math for Steve.. or Ms. Sue -

    #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

  • 7th Grade Math for Steve.. or Ms. Sue -

    1. armtc is's 34,39,44

  • 7th Grade Math for Steve.. or Ms. Sue -

    3 is 1, 1/3, 1/9

  • 7th Grade Math for Steve.. or Ms. Sue -

    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

  • 7th Grade Math for Steve.. or Ms. Sue -

    1.) C
    2.) B
    3.) C
    4.) B
    5.) D

  • 7th Grade Math for Steve.. or Ms. Sue -

    number 4 is 3 not b other that that I got 100 percent

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