  | 
   | 
   | 
   | 
   | 
 
    | 
    | 
    | 
  
   | 
    Percentages | 
  2006-11-23 | 
  
    | 
  Hyaqcinth pose la question : I just do not understand percentages...if the cost of a product is $1.20, how can I make a profit of 55% ? how do I calculate this problem? Stephen La Rocque lui répond. | 
    
    | 
  
    | 
  
    | 
    | 
    | 
  
   | 
    1X2X3X4+1=5^5 | 
  2006-11-23 | 
  
    | 
  Liza pose la question : 1X2X3X4+1=5 square   2x3x4x5+1=11 square  What is the rule for this? Stephen La Rocque and Penny Nom lui répond. | 
    
    | 
  
    | 
  
    | 
    | 
    | 
  
   | 
    Dimensions of a rectangle | 
  2006-11-22 | 
  
    | 
  Terri pose la question : How can you find the dimensions of a rectangle that has a perimeter of 18 feet? Stephen La Rocque lui répond. | 
    
    | 
  
    | 
  
    | 
    | 
    | 
  
   | 
    Profit margin | 
  2006-11-22 | 
  
    | 
  Kris pose la question : I just started a new sales position and need to calculate profit margins based on my cost of a given product. For example I have a piece of equipment that costs me $102,077.73. I need to figure a profit margin of 18% from cost to arrive at my sale price. What is the best way to do this? Penny Nom lui répond. | 
    
    | 
  
    | 
  
    | 
    | 
    | 
  
   | 
    addition et soustraction des heures, minutes, secondes | 
  2006-11-22 | 
  
    | 
  Halnais pose la question : 13 h. 25 mn + 18 h. 06 mn  23 h. 31 mn + 19 h. 33 mn  
   je ne me souviens plus très bien de ces opérations, faut-il additioner les heures à part puis les minutes, etc. pour les heures je crois qu'il ne faut pas dépasser 24 h. Pourriez-vous m'aider, et me donner le résultat, merci infiniment. Claude Tardif lui répond. | 
    
    | 
  
    | 
  
    | 
    | 
    | 
  
   | 
    Factors | 
  2006-11-22 | 
  
    | 
  Jacqueline pose la question : Why do the numbers 16,36,48,60,64,90 and 100 have an odd number of factors? Stephen La Rocque and Penny Nom lui répond. | 
    
    | 
  
    | 
  
    | 
    | 
    | 
  
   | 
    A right angled triangle | 
  2006-11-22 | 
  
    | 
  Siddhartha pose la question : area of a right angled triangle OAB where OA = 5 and OB = 3 Penny Nom lui répond. | 
    
    | 
  
    | 
  
    | 
    | 
    | 
  
   | 
    Show that nCr = n C(n-r) | 
  2006-11-22 | 
  
    | 
  Ronnie pose la question : Show that nCr = n C(n-r) Penny Nom lui répond. | 
    
    | 
  
    | 
  
    | 
    | 
    | 
  
   | 
    Building a corral | 
  2006-11-22 | 
  
    | 
  Dennis pose la question : I'm building a corral and need to know how many holes 6"x24'' in a yard of concrete  Stephen La Rocque and Penny Nom lui répond. | 
    
    | 
  
    | 
  
    | 
    | 
    | 
  
   | 
    Bearings | 
  2006-11-22 | 
  
    | 
  Suzy pose la question : Mr. John wants to fly her airplane from point A to B, a distance of 450 miles. If B has a heading of 60 degrees from A, and there is a constant wind from the southeast blowing at 60 mph, find the speed and heading she should maintain in order to land at B in 90 minutes. Stephen La Rocque lui répond. | 
    
    | 
  
    | 
  
    | 
    | 
    | 
  
   | 
    cos2x=1 | 
  2006-11-21 | 
  
    | 
  Christina pose la question : I'm have a hard time solving cos2x=1 for exact values between 0<_x <360 Stephen La Rocque and Penny Nom lui répond. | 
    
    | 
  
    | 
  
    | 
    | 
    | 
  
   | 
    Sally plays roulette | 
  2006-11-21 | 
  
    | 
  Sherry pose la question : Sally plans to bet 100 bets of $1.00 each on red roulette. the probability of the ball landing on red is 18/38 what is the probability that Sally will win at least half the time Penny Nom lui répond. | 
    
    | 
  
    | 
  
    | 
    | 
    | 
  
   | 
    How do I factor 10x^2 + 17x + 6? | 
  2006-11-21 | 
  
    | 
  Sheldon pose la question : How do I factor 10x^2 + 17x + 6? Penny Nom lui répond. | 
    
    | 
  
    | 
  
    | 
    | 
    | 
  
   | 
    An Easement | 
  2006-11-21 | 
  
    | 
  Ms Porter pose la question : I need to acquire a 20 feet easement for a project and I need to know how many square feet are in a 20 feet easement? Penny Nom lui répond. | 
    
    | 
  
    | 
  
    | 
    | 
    | 
  
   | 
    The Fibonacci sequence | 
  2006-11-21 | 
  
    | 
  Ross pose la question : Let f0 = 0; f1 = 1,... be the Fibonacci sequence where for all n greater than or equal to 2 fn = fn-1 + fn-2. Let Q = (1+square root of 5)/2. Show that for all positive n greater than or equal to 0, fn less than or equal to Q^(n-1). Penny Nom lui répond. | 
    
    | 
  
    |