document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=154316>Question 154316</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 7. One common use of positive and negative exponents is in writing numbers as scientific notation. For example 0.000052 can be written as 5.2 ´ 10-5. A) Use scientific notation and the laws of exponents to evaluate (0.0075)(0.0000002)(0.001). Leave your answer in scientific notation. B) If a space probe travels at 40000 kilometers per hour for 1 year, how far will it travel? Write your answer in scientific notation. (Assume 1 year = 365 days)Scientific Notation: A number is expressed in scientific notation when it is in the form a x 10n, where a is greater than or equal to 1 but less than 10 and n is an integer.\r<BR>\n" );
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document.write( "this is my school problem. I need to see this written out in order to comprehend what to do next time a problem like this comes around. Thank you.\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #113618 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=113618\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A) Use scientific notation and the laws of exponents to evaluate <BR>\n" );
document.write( "(0.0075)(0.0000002)(0.001). Leave your answer in scientific notation. \r<BR>\n" );
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document.write( "7.5x10^-3 * 2.0x10^-7 * 1.0x10^-3\r<BR>\n" );
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document.write( "= 15x10^-13 = 1.5x10^-12<BR>\n" );
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document.write( "B) If a space probe travels at 40000 kilometers per hour for 1 year, how far will it travel? Write your answer in scientific notation. (Assume 1 year = 365 days)<BR>\n" );
document.write( "40000*365*24 = 4.0x10^4 * 3.65x10^2 * 2.4*10 \r<BR>\n" );
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document.write( "= 35.04x10^7\r<BR>\n" );
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document.write( "= 3.504 10x^8 km\r<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
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