document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=143007>Question 143007</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can someone please help me? <BR>\n" );
document.write( "the magnitude of the vector -3i-5j is <BR>\n" );
document.write( "a. -4 <BR>\n" );
document.write( "b. 4<BR>\n" );
document.write( "c. sqrt 26<BR>\n" );
document.write( "d. sqrt 34  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #104062 by </B><A HREF=/tutors/aboutme.mpl?userid=vleith><B>vleith(2983)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=vleith><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=104062\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> When looking at a vector, you need to look at the the 'size' or amplitude of the the vector. A vector has an x component and a y component (or in your case, an i and a j).\r<BR>\n" );
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document.write( "Look at the vector like a hypotenuse of a right triangle where the two legs are given in terms of i an j.\r<BR>\n" );
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document.write( "You know that in a right triangle, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c%5E2+=+a%5E2+%2B+b%5E2 ALIGN=MIDDLE  ALT=\"c%5E2+=+a%5E2+%2B+b%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Thus, in this case<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c%5E2+=+%28-3%29%5E2+%2B+%28-5%29%5E2 ALIGN=MIDDLE  ALT=\"c%5E2+=+%28-3%29%5E2+%2B+%28-5%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+c%5E2+=+9+%2B+25 ALIGN=MIDDLE  ALT=\"+c%5E2+=+9+%2B+25\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+c%5E2+=+34+ ALIGN=MIDDLE  ALT=\"+c%5E2+=+34+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c+=+sqrt%2834%29+ ALIGN=MIDDLE  ALT=\"c+=+sqrt%2834%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Got it? </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );