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What is the cost price? 2006-04-14
Purushotham pose la question :
If the selling price is 120 and the profit is 20%, what is the cost price?
Stephen La Rocque lui répond.
Compound Interest Formula and explanation 2006-04-14
Michelle pose la question :
Currently there is $10,000 in a customer's savings account that earns 4% interest compounded annually. How much interest will the customer earn in a year?
Stephen La Rocque lui répond.
The product of successive terms in sequences 2006-04-13
Forrest pose la question :
1) Find three successive terms in an arithmetic sequence such that their sum is 24 and their product is 440 2) Find three successive terms in a geometric sequence such that their sum is 21 and their product is 216
Penny Nom lui répond.
Price percentages 2006-04-13
Kristine pose la question :
An item that is no longer on sale at "25% off" receives a price tag that is 33 1/3% more than the sale price. Has the item price been restored to its original price? Why or Why not?
Stephen La Rocque lui répond.
Perimeter of a triangle atop a square 2006-04-13
Mary pose la question :
There is an (irregular) pentagon that is made up of a square and a triangle. The triangle is directly on top of the square. The triangle is a right triangle. One of the angles is 45 degrees. One of the sides of the triangle is 4. What is the perimeter of the pentagon?
Penny Nom lui répond.
Cone dimensions 2006-04-12
Mirnela pose la question :
The height of a cone is 40 and the radius is 9. How do I find the slant height of this? Also, how do I find the area of the base of a cone if the radius is 7?
Stephen La Rocque lui répond.
How to find the odds for a lottery jackpot 2006-04-12
Harvey pose la question :
Is it best to use factorials to calculate the odds of winning a lottery, such as the MegaMillions that is popular in the US, or is there a better way?
Stephen La Rocque lui répond.
Finding the inverse of a function 2006-04-12
Sam pose la question :
If g(x) = 2x+3/5 then how do I find the inverse?
Walter Whiteley lui répond.
Probability of a committee with 3 parents and 3 teachers 2006-04-12
Javier pose la question :
A committee consisting of 6 people is to be selected from 8 parents and 4 teachers. Find the probability of selecting 3 parents and 3 teachers.
Stephen La Rocque lui répond.
Finding square roots 2006-04-12
Fehmida pose la question :
I would like to know about tricks or formulas to do complicated square roots. ex. square root of 1029
Penny Nom and Steve La Rocque lui répond.
Arithmetic Sums 2006-04-12
Angel pose la question :
(a) In a particular arithmetic sequence, u6 = 344.5 and u20 = 88.3. Find S28. (b) In a particular arithmetic series, S10 = 495 and S15 = 1005. Express S15 in sigma notation.
Stephen La Rocque lui répond.
The average of a function 2006-04-11
Justin pose la question :
Find the average value of the following function from x=0 to x=7 f(x)=3x+4
Penny Nom lui répond.
Sum of a Geometric Sequence 2006-04-11
Andre pose la question :
In a particular geometric sequence, U3=-3.6 and U10=12.9. Find S16 and S17.
Stephen La Rocque lui répond.
The area of a regular hexagon 2006-04-10
A student pose la question :
find the area of a regular hexagon with a apothem of 9
Stephen La Rocque lui répond.
An epicycloid 2006-04-10
Sharon pose la question :
What is the name of the curve formed by a point on the circumference of a circle that rolls on the outside of a fixed circle? This curve is used in the study of gears.
Stephen La Rocque and Penny Nom lui répond.
 
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