3 articles trouvés pour ce sujet.
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    A weighted average | 
  2008-11-27 | 
  
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  Kenneth pose la question : I am interested in determining the answers to the following question by using some type of weighted average:
 
  
An investor has $30,000 to invest at simple interest in two accounts. One account earns 2% and the second earns 5%. How much must he invest in each account if his total return is 4% or $1,200? Penny lui répond. | 
    
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    Averaging grades | 
  2002-10-24 | 
  
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  Richard pose la question : I'm using a grading program for the first time this year. (ok, that's not a question) I require my students to record their grades in a Scorekeeper when they get them back. I'd like to know if my students can keep up with averaging their grades just as the grading programs automatically averages them when I put them in the spreadsheet. Penny Nom and Claude Tardif lui répond. | 
    
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    Word problems | 
  2000-03-31 | 
  
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  Amy pose la question : Question:     - a north bound train left at noon. four hours later a south bound train left the same station. at 5 o'clook they were 160 miles apart. what was the rate of both if the north bound train was going 20 miles faster than the other one.   
   - clark's final exam was given 5 times the weight of the weight of a weekly test. the avgerage of 15 weekly test was 91. the overall weighted average was 85. what did he make on the final.   
    Penny Nom lui répond. | 
    
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