document.write( "Question 800731: a space craft takes 4s for 42km, find its average speed \n" ); document.write( "
Algebra.Com's Answer #483236 by Alan3354(69443)\"\" \"About 
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a space craft takes 4s for 42km, find its average speed
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\n" ); document.write( "d = r*t
\n" ); document.write( "r = d/t
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