+0

# Hi good people!,

0
205
8
+597

Hi good people!,

I tried this sum, however I'm not too sure about the $$3^{n-2}$$

$${8*3^n} \over 3^{n+2}-3^{n-2}$$

Thanx for the help!

May 17, 2019

#1
+42
+1

I think that the answer is $$\dfrac{9}{10}$$

/ᐠ｡ꞈ｡ᐟ\/ᐠ｡ꞈ｡ᐟ\/ᐠ｡ꞈ｡ᐟ\

May 17, 2019
#2
+597
+1

Hi yes, I got that answer, just was not sure if I handled the sum correctly. Thanx for your time..

juriemagic  May 17, 2019
#3
+42
+1

If you got that answer, you probably handled the sum correctly.

/ᐠ｡ꞈ｡ᐟ\/ᐠ｡ꞈ｡ᐟ\/ᐠ｡ꞈ｡ᐟ\

detkitten  May 17, 2019
#4
+597
+1

yeeeessss..abviously I then did, but before you cofirmed the answer, I was not sure..Thanx..

juriemagic  May 17, 2019
#5
0

xxxxxxxxxxx

May 17, 2019
edited by Guest  May 17, 2019
#6
+107426
+1

$${8*3^n} \over 3^{n+2}-3^{n-2}\\~\\ {8*3^n} \over 3^n3^2\;-\:3^n3^{-2}\\~\\ {8*3^n} \over 3^n(3^2\;-\:3^{-2})\\~\\ \frac{8}{3^2\;-\:3^{-2}}\\~\\ 8 \div(9-\frac{1}{9})\\~\\ 8 \div(\frac{81}{9}-\frac{1}{9})\\~\\ 8 \div(\frac{80}{9})\\~\\ 8 \times(\frac{9}{80})\\~\\ 0.9$$

.
May 17, 2019
#7
+597
+2

hello my dearest Melody......thank you for the help, actually I was being just silly to post that sum, as it really was not that difficult to start with, and I should have known the answer I got was right, anyways thanks again...I do however have one or two sums for today that I REALLY have not a clue how to do...

juriemagic  May 20, 2019
edited by juriemagic  May 20, 2019
#8
+107426
+1

Maybe you should have included the links

Melody  May 20, 2019