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anonymous
 one year ago
Write the sum using summation notation, assuming the suggested pattern continues.
9  3 + 3 + 9 + ... + 81
Could someone please help?? I will medal, but I just don't understand these problems.
anonymous
 one year ago
Write the sum using summation notation, assuming the suggested pattern continues. 9  3 + 3 + 9 + ... + 81 Could someone please help?? I will medal, but I just don't understand these problems.

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Hero
 one year ago
Best ResponseYou've already chosen the best response.0Hint: Write the numbers as exponents.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So... 3^2  3^1 + 3^1 + 3^2 ...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yes, it is 3^4, so in total: 3^2  3^1 + 3^1 + 3^2 ... 3^4

Hero
 one year ago
Best ResponseYou've already chosen the best response.0Good. What number exists between 3^2 and 3^4?

Hero
 one year ago
Best ResponseYou've already chosen the best response.0Exactly. So now you can write using summation notation since you have the complete pattern.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'm confused on how to write it into summation notation.

Hero
 one year ago
Best ResponseYou've already chosen the best response.0Do you know what summation notation looks like?

Hero
 one year ago
Best ResponseYou've already chosen the best response.0Well, then you should try your best to write the pattern in summation notation. Don't be afraid to make a mistake.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Ok I'll give it a try. Thanks!
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