document.write( "Question 1070004: Evaluate this expression,
\n" ); document.write( "If u = <−3, 7> and v = <5,1>.
\n" ); document.write( "|| v - u ||
\n" ); document.write( "|| v - u||->||||->√a²+b²\r
\n" ); document.write( "\n" ); document.write( "A.) <8, -7>
\n" ); document.write( "B.) <8, 7>
\n" ); document.write( "C.) 10
\n" ); document.write( "D.) -10
\n" ); document.write( "Thank you. \n" ); document.write( "

Algebra.Com's Answer #685098 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
You can do this one without calculations.
\n" ); document.write( "A magnitude is a scalar so only number answers are possible choices.
\n" ); document.write( "A magnitude is also always non-negative.
\n" ); document.write( "So the only possible answer is 10.
\n" ); document.write( "So much for multiple choice mathematics.
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\n" ); document.write( " $\"v-u\"$ =( $\"5-%28-3%29\"$ , $\"1-7\"$ )=( $\"8\"$ , $\"-6\"$ )
\n" ); document.write( "So then
\n" ); document.write( " $\"abs%28v-u%29=sqrt%288%5E2%2B%28-6%29%5E2%29=sqrt%2864%2B36%29=sqrt%28100%29=10\"$
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