document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=86338>Question 86338</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Good day to all,I need some help with some problems,the first one is,Evaluate 2x^-1y^3 if x=2 and y=-1.The next one is,Express 7,200,000,000 in scientific notation.The next one is,Express (1.4 times 10^7)(2.5 times 10^2)in scientific notation.And the last one is,Evaluate -5x^4z,if x=-2 and z=3.Thanks to whoever can help me. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #62470 by </B><A HREF=/tutors/aboutme.mpl?userid=jayanthihemkos@yahoo.com><B>jayanthihemkos@yahoo.com(87)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jayanthihemkos@yahoo.com><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=62470\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2x^-1y^3 if x=2 and y=-1\r<BR>\n" );
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document.write( "2(2)^-1*(-1)^3\r<BR>\n" );
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document.write( "2*1/2*-1     (2*1/2 gets cancelled and we get 1)\r<BR>\n" );
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document.write( "1*-1\r<BR>\n" );
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document.write( "=-1\r<BR>\n" );
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document.write( "2) Express 7,200,000,000 in scientific notation\r<BR>\n" );
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document.write( "72*10^8\r<BR>\n" );
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document.write( "7.2*10^9\r<BR>\n" );
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document.write( "3) (1.4 times 10^7)(2.5 times 10^2)in scientific  notation\r<BR>\n" );
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document.write( "   <BR>\n" );
document.write( "     3.5*10^10\r<BR>\n" );
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document.write( "4) -5x^4z,if x=-2 and z=3.\r<BR>\n" );
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document.write( "   plugin the value of x an d z\r<BR>\n" );
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document.write( "   -5(-2)^4(3)\r<BR>\n" );
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document.write( "   -5(32)(3)\r<BR>\n" );
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document.write( "   -5(96)<BR>\n" );
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document.write( "   -480\r<BR>\n" );
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document.write( " </SPAN>\n" );
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