document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=815602>Question 815602</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If a 650-cm ladder is placed against a building at a certain angle, it just reaches a point on the building that is 520 cm above the ground. If the ladder is moved to reach a point 80 cm higher up, how much closer will the ladder be to the building? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #491110 by </B><A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><B>TimothyLamb(4379)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=TimothyLamb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=491110\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> use pythagorean thm:<BR>\n" );
document.write( "h = sqrt( aa + bb )<BR>\n" );
document.write( "---<BR>\n" );
document.write( "position 1:<BR>\n" );
document.write( "L = h = 650 cm<BR>\n" );
document.write( "a = 520 cm<BR>\n" );
document.write( "650 = sqrt( 520*520 + bb )<BR>\n" );
document.write( "650*650 = 520*520 + bb<BR>\n" );
document.write( "bb = 650*650 - 520*520<BR>\n" );
document.write( "b = 390 cm<BR>\n" );
document.write( "---<BR>\n" );
document.write( "position 2:<BR>\n" );
document.write( "L = h = 650 cm<BR>\n" );
document.write( "a = 520 + 80 = 600 cm<BR>\n" );
document.write( "650 = sqrt( 600*600 + bb )<BR>\n" );
document.write( "650*650 = 600*600 + bb<BR>\n" );
document.write( "bb = 650*650 - 600*600<BR>\n" );
document.write( "b = 250 cm<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Answer:<BR>\n" );
document.write( "the ladder will be closer to the building by: <BR>\n" );
document.write( "390 - 250 = 140 cm<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve and graph linear equations:<BR>\n" );
document.write( "https://sooeet.com/math/linear-equation-solver.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve quadratic equations, quadratic formula:<BR>\n" );
document.write( "https://sooeet.com/math/quadratic-formula-solver.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Convert fractions, decimals, and percents:<BR>\n" );
document.write( "https://sooeet.com/math/fraction-decimal-percent.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Calculate and graph the linear regression of any data set:<BR>\n" );
document.write( "https://sooeet.com/math/linear-regression.php </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );