document.write( "Question 273475: 1) Suppose you are taking a course that has 4 Tests. the first 3 Tests have 100 points each and the fouth has 200 points. to get an A in the course, a student must have an average of at least 90 percent on the four Tests. your scores on the first 3 Tests were: 87 , 92 and 84. what must you score on the fourth Test to get an A in Course? \r
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document.write( "2) Suppose your driving on a freeway to a town 150 miles from your home. After 30 minutes you pass a freeway exit that you know is 25 miles from your home. Assuming that you continue at the same constant speed, how long will the entire trip take? \n" );
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Algebra.Com's Answer #199776 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! 1) Suppose you are taking a course that has 4 Tests. the first 3 Tests have 100 points each and the fourth has 200 points. \n" ); document.write( " to get an A in the course, a student must have an average of at least 90 percent on the four Tests. \n" ); document.write( " your scores on the first 3 Tests were: 87 , 92 and 84. what must you score on the fourth Test to get an A in Course? \n" ); document.write( ": \n" ); document.write( "Let the 4th test score = x (out of 200) \n" ); document.write( "This test has 200 points, so each point = half a percent therefore: \n" ); document.write( " \n" ); document.write( "Add the given grades and multiply by 4 \n" ); document.write( "263 + .5x = 4(90) \n" ); document.write( ".5x = 360 - 263 \n" ); document.write( ".5x = 97 \n" ); document.write( "Multiply by 2 \n" ); document.write( "x = 2(97) \n" ); document.write( "x = 194 points required on a 200 pt test \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "2) Suppose your driving on a freeway to a town 150 miles from your home. \n" ); document.write( " After 30 minutes you pass a freeway exit that you know is 25 miles from your home. \n" ); document.write( " Assuming that you continue at the same constant speed, how long will the entire trip take \n" ); document.write( ": \n" ); document.write( "Find the speed you are driving (change 30 min to .5 hr): \n" ); document.write( "You went 25 mi in a half hour \n" ); document.write( " \n" ); document.write( ": \n" ); document.write( "Find the time to travel 150 mi at 50 mph (you can do it in your head) \n" ); document.write( " \n" ); document.write( ": \n" ); document.write( "I assume you are the one who put this problem in my comment section. The trouble with that is, unless you include an email address, I have no way of \n" ); document.write( "knowing who you are or even what problem your talking about. \n" ); document.write( " |