document.write( "Question 951163: The scale of a map is 1:2,000,000. If two cities are 4 cm apart on this map, how many km apart are they really? \n" ); document.write( "

Algebra.Com's Answer #580817 by josmiceli(19441) $\"\"$ $\"About$

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convert cm to km
\n" ); document.write( "[ cm ] x [ m/cm ] x [ km/m ] = [ km ]
\n" ); document.write( " $\"+4%2A%28+1%2F100+%29%2A%28+1%2F1000+%29+=+4%2A10%5E%28-5%29+\"$ km
\n" ); document.write( "-------------------
\n" ); document.write( "Let $\"+x+\"$ = distance apart of the cities in km
\n" ); document.write( "Set up the ratio:
\n" ); document.write( " $\"+1+%2F+%28+2%2A10%5E6+%29+=+%28+4%2A10%5E%28-5%29+%29+%2F+x+\"$
\n" ); document.write( "Multiply both sides by $\"+x%2A%28+2%2A10%5E6+%29+\"$
\n" ); document.write( " $\"+x+=+%28+2%2A10%5E6+%29%2A%28+4%2A10%5E-5+%29+\"$
\n" ); document.write( " $\"+x+=+80+\"$
\n" ); document.write( "The cities are 80 km apart\r
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