SOLUTION: We are standing on a roof and we throw a ball from a certain height.The height of the bounce of the ball is equal to 70% of the height from where we threw it. Also each successive

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Question 185195: We are standing on a roof and we throw a ball from a certain height.The height of the bounce of the ball is equal to 70% of the height from where we threw it.
Also each successive bounce is 70% of the height it last bounced to.
If the height of the third bounce is 10.29m., at what height are we standing>????????????????????????????????? PLZZZZZZZZZZZZZZZ HELPPPPPPPPPPP !!!!!!!!!!!!! I ReALLY NEED HELPPPPPPPPPPPPPPPPPP !!!!!!!!!!
Answer by Edwin McCravy(20060)   (Show Source): You can put this solution on YOUR website!
Suppose the roof is X meters high.

Therefore the first bounce was 70% of X or .7X meters

Therefore the second bounce was 70% of .7X or .7(.7X) or .49X meters

Therefore the third bounce was 70% of .49X or .7(.49X) or .343X meters

So we set .343X meters = to 10.29 meters:


        
        
        

Edwin
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