document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1161522>Question 1161522</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Is it C? I want to check my answer.\r<BR>\n" );
document.write( "\n" );
document.write( "Matrix C has the dimensions 7 X 2 and Matrix D has the dimensions 2 X 7. Determine the dimensions of the matrix CD, if it is possible. Explain why if it is not. \r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "A. Matrix CD would have the dimensions 2 X 2\r<BR>\n" );
document.write( "\n" );
document.write( "B. Matrix CD would have the dimensions 2 X 7\r<BR>\n" );
document.write( "\n" );
document.write( "C. Matrix CD would have the dimensions 7 X 7\r<BR>\n" );
document.write( "\n" );
document.write( "D. These matrices cannot be multiplied because their dimensions don't align.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "The question is provided in the link here: https://i.imgur.com/Mskgwc3.png </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #785111 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52781)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=785111\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "The post by @MathLover1 consists of two statements and a conclusion.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Of these two statements, the first one is correct, but the second contradicts to the first one and is <U>INCORRECT</U>.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Her conclusion is INCORRECT, too.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "The correct solution to the problem is below.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "<PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\">\r\n" );
document.write( "    I used the text by @MathLover1, by re-edited it to make it correct.\r\n" );
document.write( "</PRE>\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "<U>Solution</U>\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "You can only multiply two matrices if their dimensions are compatible , which means the number of columns <BR>\n" );
document.write( "in the first matrix is the same as the number of rows in the second matrix.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Matrix C has the dimensions 7 X 2 (two columns) and Matrix D has the dimensions 2 X 7 (two rows).\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "So, their dimensions are  compatible for multiplication in this order.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Therefore, the <U>ANSWER</U> is:\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C. &nbsp;&nbsp;Matrix &nbsp;CD &nbsp;has the dimensions 7 X 7.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "--------------\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Solved.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );