Question

http://media.education2020.com/evresources/648-09-01-00-00_files/i0150000.jpg

=http://media.education2020.com/evresources/648-09-01-00-00_files/i0150001.jpg

Answer 1

We also have an Equation tool :)
\[9^{10n-12} = \frac{ 1 }{ 6,561 }\]

Answer 2

Now can you write 6,561 in terms of 9^{something} ??

Answer 3

so 6,561^9? :)

Answer 4

No, I want you to factorize 6,561

Answer 5

ohhh okay and you just put them together. is ee what yu did there :)

Answer 6

okay hold on

Answer 7

okay you mean what=6561?

Answer 8

i got 9^4

Answer 9

Can you answer the question now ??

Answer 10

i dont know how to do this at all... i was trying to see if someone could show me how to do this step by step

Answer 11

Correct. So the question becomes
\[9^{10n-12} = 9^{-4}\]

Can you tell me why I used (-4) ??