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Percentages |
2006-11-23 |
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From Hyaqcinth:
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?
Answered by Stephen La Rocque. |
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1X2X3X4+1=5^5 |
2006-11-23 |
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From Liza:
1X2X3X4+1=5 square
2x3x4x5+1=11 square
What is the rule for this?
Answered by Stephen La Rocque and Penny Nom. |
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Dimensions of a rectangle |
2006-11-22 |
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From Terri:
How can you find the dimensions of a rectangle that has a perimeter of 18 feet?
Answered by Stephen La Rocque. |
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Profit margin |
2006-11-22 |
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From Kris:
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?
Answered by Penny Nom. |
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addition et soustraction des heures, minutes, secondes |
2006-11-22 |
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From Halnais:
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.
Answered by Claude Tardif. |
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Factors |
2006-11-22 |
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From Jacqueline:
Why do the numbers 16,36,48,60,64,90 and 100 have an odd number of factors?
Answered by Stephen La Rocque and Penny Nom. |
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A right angled triangle |
2006-11-22 |
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From Siddhartha:
area of a right angled triangle OAB where OA = 5 and OB = 3
Answered by Penny Nom. |
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Show that nCr = n C(n-r) |
2006-11-22 |
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From Ronnie:
Show that nCr = n C(n-r)
Answered by Penny Nom. |
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Building a corral |
2006-11-22 |
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From Dennis:
I'm building a corral and need to know how many holes 6"x24'' in a yard of concrete
Answered by Stephen La Rocque and Penny Nom. |
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Bearings |
2006-11-22 |
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From Suzy:
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.
Answered by Stephen La Rocque. |
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cos2x=1 |
2006-11-21 |
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From Christina:
I'm have a hard time solving cos2x=1 for exact values between 0<_x <360
Answered by Stephen La Rocque and Penny Nom. |
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Sally plays roulette |
2006-11-21 |
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From Sherry:
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
Answered by Penny Nom. |
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How do I factor 10x^2 + 17x + 6? |
2006-11-21 |
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From Sheldon:
How do I factor 10x^2 + 17x + 6?
Answered by Penny Nom. |
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An Easement |
2006-11-21 |
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From Ms Porter:
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?
Answered by Penny Nom. |
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The Fibonacci sequence |
2006-11-21 |
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From Ross:
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).
Answered by Penny Nom. |
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