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    Hello, can anyone help me ? I have been doing table patterns and the sequence is as follows 10,40,90,160,250
    30 50 70 90
    20 20 20

    nth term =dn+(a-d)
    = 10n+0
    = 10n is this right?
    please help me

    and

    a+(n-1)+half(n-1)(n-2)c
    10+(n-1)30+half(n-1)(n-2)20
    10+30n-30+10(n-1)(n-2)20 this is as far as i can get
    please please help me on this one too

    thank you,

    Gina Ps I can help with a level english,psychology and physiology
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    (Original post by gina94)
    Hello, can anyone help me ? I have been doing table patterns and the sequence is as follows 10,40,90,160,250
    30 50 70 90
    20 20 20

    nth term =dn+(a-d)

    please help me

    and

    a+(n-1)+half(n-1)(n-2)c

    please please help me on this one too

    thank you,

    Gina
    well basically for the nth term, it's just 10n^2 yes?

    does that help?
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    (Original post by 4Ed)
    well basically for the nth term, it's just 10n^2 yes?

    does that help?

    No please can you show me how you worked it out please please
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    (Original post by gina94)
    Hello, can anyone help me ? I have been doing table patterns and the sequence is as follows 10,40,90,160,250
    30 50 70 90
    20 20 20

    nth term =dn+(a-d)
    = 10n+0
    = 10n is this right?
    please help me

    and

    a+(n-1)+half(n-1)(n-2)c
    10+(n-1)30+half(n-1)(n-2)20
    10+30n-30+10(n-1)(n-2)20 this is as far as i can get
    please please help me on this one too

    thank you,

    Gina Ps I can help with a level english,psychology and physiology
    It is a geometric series, not an arithmetic.
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    (Original post by gina94)
    No please can you show me how you worked it out please please
    well i just spotted that your sequency was basically:
    1,4,9,16 which is n^2.

    10n^2 gives the one you have.
 
 
 
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