document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1185334>Question 1185334</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An extrasolar planet is observed at a distance of 4.2×10^9 kilometers away. A group of scientists has designed a spaceship that can travel at the speed of 7×10^8 kilometers per year.\r<BR>\n" );
document.write( "\n" );
document.write( "How many years will the spaceship take to reach the extrasolar planet? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #816148 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=816148\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the extrasolar planet is 4.2 * 10^9 kilometers away.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "the spaceship can travel at a speed of 7 * 10^8 kilometers per year.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "4.2 * 10^9 kilometers divided by 7 * 10^8 kilometers per year would be equal to 6 years.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "the division is done as follows:\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "(4.2 * 10^9) / (7 * 10^8) = (4.2 / 7) * (10^9 / 10^8) which is equal to:\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "(4.2 / 7) * (10^(9-8)) which is equal to:\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "(4.2 / 7) * 10^1 which is equal to:\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( ".6 * 10 which is equal to 6.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "you can use your scientific calculator to confirm that this is true.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "enter:\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "(4.2*10^9)/(7*10^8)\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "the calculator will tell you the answer is 6.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );