document.write( "Question 417729: d=r*t
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document.write( "I need help finding the proper formula. I will solve the equation. just need help with utilizing proper formula. Thank you.
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document.write( " A trucker drove for 4 hours before he encountered icy road conditions. He reduced his speed by 20 MPH and continued driving for 3 more hours. find his average speed during the first part of the trip if the entire trip was 325 miles. \n" );
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Algebra.Com's Answer #292421 by mananth(16946)![]() ![]() You can put this solution on YOUR website! speed = x initially \n" ); document.write( "distance = 4x \n" ); document.write( ".. \n" ); document.write( "then speed = x-20 \n" ); document.write( "distance = 3(x-20) \n" ); document.write( "... \n" ); document.write( "4x+3(x-20)=325 \n" ); document.write( "4x+3x-60=325 \n" ); document.write( "7x=385 \n" ); document.write( "/7 \n" ); document.write( "x=55 mph initially \n" ); document.write( " |