Please help!
A ball is dropped from the top of a 1,000 foot building. The height of the ball is half its original height after each bounce. What will the height of the ball be after 12 bounces? Using complete sentences, explain the procedure taken to answer this question.

Question

Please help! 
A ball is dropped from the top of a 1,000 foot building. The height of the ball is half its original height after each bounce. What will the height of the ball be after 12 bounces? Using complete sentences, explain the procedure taken to answer this question.

anonymous · Answer

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

anonymous · Answer

This is geometric sequence

anonymous · Answer

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

anonymous · Answer

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

anonymous · Answer

It should be n not n-1

anonymous · Answer

Ok I did that and get 0.488281125

anonymous · Answer

$$1000 (\frac{1}{2})^{12}$$

anonymous · Answer

But why not n-1?

anonymous · Answer

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

anonymous · Answer

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

anonymous · Answer

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

anonymous · Answer

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

anonymous · Answer

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

anonymous · Answer

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