document.write( "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.
\n" ); document.write( "Also each successive bounce is 70% of the height it last bounced to.
\n" ); document.write( "If the height of the third bounce is 10.29m., at what height are we standing>????????????????????????????????? PLZZZZZZZZZZZZZZZ HELPPPPPPPPPPP !!!!!!!!!!!!! I ReALLY NEED HELPPPPPPPPPPPPPPPPPP !!!!!!!!!! \n" ); document.write( "

Algebra.Com's Answer #138941 by Edwin McCravy(20064) $\"\"$ $\"About$

You can put this solution on YOUR website!

\r\n" );
document.write( "Suppose the roof is X meters high.\r\n" );
document.write( "\r\n" );
document.write( "Therefore the first bounce was 70% of X or .7X meters\r\n" );
document.write( "\r\n" );
document.write( "Therefore the second bounce was 70% of .7X or .7(.7X) or .49X meters\r\n" );
document.write( "\r\n" );
document.write( "Therefore the third bounce was 70% of .49X or .7(.49X) or .343X meters\r\n" );
document.write( "\r\n" );
document.write( "So we set .343X meters = to 10.29 meters:\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "        \r\n" );
document.write( "        \r\n" );
document.write( "        \r\n" );
document.write( "\r\n" );
document.write( "Edwin

\n" ); document.write( " \n" ); document.write( "

\n" );