document.write( "Question 912858: an 80 km/h airplane caught in a 60 km/h crosswind has a result speed of\r
\n" ); document.write( "\n" ); document.write( "a.60 km/h
\n" ); document.write( "b.80 km/h
\n" ); document.write( "c.100 km/h
\n" ); document.write( "d. 141 km/h
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Algebra.Com's Answer #554119 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
Add the speeds as vectors using the Pythagorean theorem,
\n" ); document.write( "\"V%5E2=80%5E2%2B60%5E2\"
\n" ); document.write( "\"V%5E2=6400%2B3600\"
\n" ); document.write( "\"V%5E2=10000\"
\n" ); document.write( "\"V=100\"\"kph\"
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