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You dont have explain in sentences. I just want the height please!

This is geometric sequence

Yes it is, I get the answer 0.48828125, But i dont think it is right.

a = 1000
r = 1/2
n = 12
\[1000 (\frac{1}{2})^{n-1}\]

It should be n not n-1

Ok I did that and get 0.488281125

\[1000 (\frac{1}{2})^{12}\]

But why not n-1?

Because the formula I am given is with n-1, hmm idkk

Do you mean the geometric formula that you are given or this question provides you a formula?

Well that's the only formula I am given in my lesson.. yeah the first part of ur question is right

It shouldn't be n-1. You need to visualize the situation

Ok, then why don't you use -1? Because the first height wouldn't count right?

|dw:1323133998962:dw|

thanks, i kinda understand now.

Glad that you get help from Open Study

Thank you :)