I need help with my math homework. Please help, I need it. So what is the pattern in the following numbers?

I need the next two numbers in the pattern too. I also need to "explain my reasoning". 729, -243, 81, -27, 9

Update:

Thank you to every one, with a few exeptions. Like the people who implied that I was ignorant or something.

14 Answers

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  • Alian
    Lv 4
    1 decade ago
    Favorite Answer

    It's equal to: (-3)^6, (-3)^5, (-3)^4, (-3)^3, (-3)^2

    Therefore, the next two are (-3)^1 and (-3)^0 which are -3 and 1

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  • 1 decade ago

    You would divide each one be -3.

    The next two numbers in the pattern would be -3 and then 1.

    Source(s): my brain
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  • Anonymous
    1 decade ago

    This is a geometric sequence

    r=-1/3 (729/-243=-1/3, -243/81=-3, ...)

    to find the nth term, use formula a_n=a_1* r^(n-1)

    so...

    the next two terms are the 6th and 7th respectively

    so plug those numbers in,

    you get:

    a_6=729* (-1/3)^5=-3, and

    a_7=729* (-1/3)^6=-1/3

    of course, you can always rely on common sense

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  • 1 decade ago

    divide by -3

    the next two numbers are -3 and 1

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  • 1 decade ago

    divided by -3

    the next two numbers are -3 and 1

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  • 3 years ago

    Divide one hundred fifty by skill of 8, then study something. === case in point, be conscious that 15 is interior the comparable row as 7 -- 15 / 8 = a million with the rest 7. be conscious that 11 is interior the comparable row as 3 -- 11/8 = a million the rest 3. be conscious that sixteen is interior the comparable row as 8 and 0. sixteen/8 = 2 the rest 0. Now persist with something rule to one hundred fifty/8.

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  • 1 decade ago

    The pattern is divided by -3. So, next two nos. will be -3 and 1 respectively. Hope you get the idea now !!!!

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  • 1 decade ago

    Divide each number by -3.

    Source(s): 3 minutes of thinking
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  • 1 decade ago

    they are the powers of negative three

    so

    -3^1=-3

    -3^2= 9

    -3^3=-27

    -3^4= 81

    .........

    you should ge the idea now.

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  • 1 decade ago

    divide by negative 3.

    so it would be -3 & 1

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