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derek123

  • 2 years ago

there are three terms of arithmetic sequence a1=decrease by 5 a2=decrease by 1 a3=twice the original term find the a3..???

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  1. Poleng_InLove
    • 2 years ago
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    LoL Derek ! XD

  2. hartnn
    • 2 years ago
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    is the common difference also given ?

  3. derek123
    • 2 years ago
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    nope

  4. derek123
    • 2 years ago
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    its 11

  5. Poleng_InLove
    • 2 years ago
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    Given yung Common Difference ! 11 :P

  6. hartnn
    • 2 years ago
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    common difference = A2-A1 = A3-A2 = 11

  7. derek123
    • 2 years ago
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    the common difference is 11, sorry. xD

  8. agent0smith
    • 2 years ago
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    This is written confusingly... a1=decrease by 5 a2=decrease by 1 a3=twice the original term decrease what by 5??

  9. hartnn
    • 2 years ago
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    A3-A2 = 11 2n - (n-1) =11 can you find 'n' from here ??

  10. derek123
    • 2 years ago
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    the first term is decreased by5

  11. hartnn
    • 2 years ago
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    true! wording are really confusing and question is really weird!

  12. agent0smith
    • 2 years ago
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    The first term is decreased by 5 to make what... ? the second term? itself? It doesn't make a lot of sense.

  13. derek123
    • 2 years ago
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    yup it really doesn't

  14. hartnn
    • 2 years ago
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    @agent0smith look at this also http://openstudy.com/study#/updates/51138785e4b0e554778acff1 better notations

  15. derek123
    • 2 years ago
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    yup it really doesn't make any sense

  16. agent0smith
    • 2 years ago
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    That one makes a lot more sense. Lets use that question.

  17. hartnn
    • 2 years ago
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    unfortunately no... thatsweird too... A2-A1 is not 11 actually....

  18. derek123
    • 2 years ago
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    hahahaha. xD that's my classmate. xD we have the same question

  19. hartnn
    • 2 years ago
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    lol .ok :)

  20. Poleng_InLove
    • 2 years ago
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    Yes !

  21. hartnn
    • 2 years ago
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    and is ploeng in love with derek ?? O.o

  22. derek123
    • 2 years ago
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    hahaha. xD NO!!!!!!!!!!!!!!!

  23. Poleng_InLove
    • 2 years ago
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    nope :))

  24. hartnn
    • 2 years ago
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    okk. just wondering...

  25. agent0smith
    • 2 years ago
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    The other question seems broken too...

  26. Poleng_InLove
    • 2 years ago
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    Yah ! I think so .

  27. hartnn
    • 2 years ago
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    thats what i said...

  28. derek123
    • 2 years ago
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    2n-n-1=11 n=12 substitute it gave me 7,11 and 24

  29. derek123
    • 2 years ago
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    doesn't match with the common difference

  30. hartnn
    • 2 years ago
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    ok...i guess, 11 as common difference(d) should naot have been given. in that case d = A2 - A1 = 4 then A3-A2 = 4 and find 'n'.

  31. hartnn
    • 2 years ago
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    n=3 will give u a3 = 2n = 2*3 =6

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