document.write( "Question 141558This question is from textbook Algebra 1
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document.write( ": 1) At noon Joyce drove to the lake at 30 miles per hour, but she made the long walk back home at 4 miles per hour. How long did she walk if she was gone for 17 hours? How far did she walk? Begin by drawing a diagram of distances traveled and writing the distances equations. \r
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document.write( "2) Nine sixteenths of the girls belived that saltations was salubrious. If the other 700 girls were undecided, how many girls had made their minds concerning this topic? \n" );
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Algebra.Com's Answer #103223 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! 1) At noon Joyce drove to the lake at 30 miles per hour, but she made the long walk back home at 4 miles per hour. How long did she walk if she was gone for 17 hours? How far did she walk? Begin by drawing a diagram of distances traveled and writing the distances equations. \n" ); document.write( ": \n" ); document.write( "Let d = distance to the lake \n" ); document.write( ": \n" ); document.write( "*>------------------->---d-@-30-mph------------------*lake \n" ); document.write( "*-----------d-@-4-mph-------<-----------------------<*lake \n" ); document.write( ": \n" ); document.write( "Write a time equation: Time = \n" ); document.write( ": \n" ); document.write( "Drive time + walk time = 17 hrs \n" ); document.write( " \n" ); document.write( "Multiply equation by 30 to get rid of the denominators: \n" ); document.write( "2d + 15d = 17(60) \n" ); document.write( "17d = 17(60) \n" ); document.write( "d = 60 mi \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Check solution by finding the times \n" ); document.write( "Drive; 60/30 = 2 hrs \n" ); document.write( "Walk:: 60/4 = 15 hrs \n" ); document.write( "--------------------- \n" ); document.write( "total hours = 17 hrs \n" ); document.write( "; \n" ); document.write( ": \n" ); document.write( "2) Nine sixteenths of the girls belived that saltations was salubrious. If the other 700 girls were undecided, how many girls had made their minds concerning this topic? \n" ); document.write( ": \n" ); document.write( "Let x = the total number of girls \n" ); document.write( "The other 700 would be 7/16 \n" ); document.write( " \n" ); document.write( "7x = 700 * 16 \n" ); document.write( "7x = 11200 \n" ); document.write( "x = \n" ); document.write( "x = 1600 total girls \n" ); document.write( "; \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |