|
|
|
|
|
|
|
|
Plotting a linear equation |
2006-10-09 |
|
Jennifer pose la question :
I am having problems explaining how to do these problems to my child .
graph:2=x-y
graph the equation: 2y+x=-3
Penny Nom lui répond. |
|
|
|
|
|
One-quarter of all 3-subsets of the integers 1,2,3....,m contain the integer 5 |
2006-10-09 |
|
Hina pose la question : If one-quarter of all 3-subsets of the integers 1,2,3....,m contain the integer 5, determine the value of m. Steve La Rocque and Claude Tardif lui répond. |
|
|
|
|
|
Metric conversion |
2006-10-08 |
|
Eve pose la question : 45.6 microliter to megaliter? Stephen La Rocque lui répond. |
|
|
|
|
|
The units digit of 12^40 |
2006-10-08 |
|
Lana pose la question : FIND THE UNITS DIGIT OF 12 TO THE POWER OF 40. Penny Nom lui répond. |
|
|
|
|
|
The area of an oval |
2006-10-08 |
|
Bruce pose la question : area of an oval: 60" x 120" Stephen La Rocque lui répond. |
|
|
|
|
|
Four fours |
2006-10-08 |
|
Prabh pose la question : Find out 10 BEDMAS problems using order of operation with only four 4's in the problem. The solution must be the digits 1-10.
Example 44/44=1 Stephen La Rocque lui répond. |
|
|
|
|
|
Squaring numbers |
2006-10-08 |
|
Timothy pose la question : did anyone ever try to teach that the easiest way to find the next square in a group of numbers is to add the next odd number in the sequence. for example: 1 squared is 1, 2 squared is 4,difference of 3.the next odd number is 5 so the next square would be 4 +5 or 9 Paul Betts and Penny Nom lui répond. |
|
|
|
|
|
Two problems involving density |
2006-10-06 |
|
Patricia pose la question :
1. Nick has to ship 650,000 g of substance A to Singapore. The density of substance A is 3.23g/cm^3. If the delivery charge is 0.25 centavo per cm^3,how much does he need to pay?
2.Ann ordered 150 balloons for a birthday. Each balloon has a radius of 20cm. If the density of helium is 0.124g/cm^3,how many grams of helium is needed to meet the order?
Stephen La Rocque lui répond. |
|
|
|
|
|
Standard deviation |
2006-10-04 |
|
Jennifer pose la question : I was wondering how to figure out a standard deviation if you only have the mean of the data and no other information? Stephen La Rocque lui répond. |
|
|
|
|
|
Fill in the blanks |
2006-10-04 |
|
Justin pose la question : 1. To find out about how much, you can-------------
2. The --------- ---------states that the sum is the same no matter who you group the addends. Stephen La Rocque lui répond. |
|
|
|
|
|
The volume of a hexahedron. |
2006-10-04 |
|
A student pose la question : How do i compute volume of a generic hexahedron with all its faces being quadrilateral? Penny Nom lui répond. |
|
|
|
|
|
Filling a swimming pool |
2006-10-04 |
|
Jon pose la question : what would be the formula to fill a swimming pool in with dirt that is 15ft wide,36ft long and is 8ft deep to 3ft deep Penny Nom lui répond. |
|
|
|
|
|
Least common denominator |
2006-10-04 |
|
Paulette pose la question : Why is the LCD of 3/4 and 4/8 not the product of 4 and 8? Penny Nom lui répond. |
|
|
|
|
|
Angular speed |
2006-10-04 |
|
Jack pose la question : A horse on a merry-go-round is 7m from the center and travels at a speed of 10km/h. What is its angular speed? Stephen La Rocque lui répond. |
|
|
|
|
|
How many line segments are necessary? |
2006-10-04 |
|
Varun pose la question : If you place 35 points on a piece of paper so that no three are collinear, how many line segments are necessary to connect each point to all the others? Stephen La Rocque lui répond. |
|
|