document.write( "Question 1090431: M is the midpoint of segment AB and N is the midpoint of segment MB. If BN = 4, then what is AB? \n" ); document.write( "

Algebra.Com's Answer #704893 by MathLover1(20850) $\"\"$ $\"About$

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$\"M\"$ is the midpoint of segment $\"AB\"$ and
\n" ); document.write( " $\"N\"$ is the midpoint of segment $\"MB\"$ . \r
\n" ); document.write( "\n" ); document.write( "A_________M____N____B
\n" ); document.write( ".|..........|..........|..........|.......4....|<-\r
\n" ); document.write( "\n" ); document.write( "if $\"BN+=+4\"$ , than $\"MN+=+4\"$ because $\"N\"$ is the midpoint of segment $\"MB\"$ \r
\n" ); document.write( "\n" ); document.write( "so, $\"MB=8\"$ \r
\n" ); document.write( "\n" ); document.write( "if $\"MB=8\"$ than $\"AM=8\"$ because $\"M\"$ is the midpoint of segment $\"AB\"$ \r
\n" ); document.write( "\n" ); document.write( "and $\"AB=AM%2BMB=8%2B8=16\"$ \n" ); document.write( "

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