![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
How many trees were planted in March? |
2002-10-20 |
![](/images/transparent.gif) |
Allison pose la question : The number of trees planted by the Alpine Nursery in April was 3 more than twice the number of trees planted in March. If 71 trees were planted in april, write and solve an equation to find how many trees were planted in March. Penny Nom lui répond. |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
Is a square a rectangle? |
2002-10-20 |
![](/images/transparent.gif) |
Nona pose la question : Are squares rectangles? Third grade math teacher told a student this was true. Grandmother needs confirmation on this! Claude Tardif and Harley Weston lui répond. |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
At the zoo |
2002-10-20 |
![](/images/transparent.gif) |
A student pose la question : The number of adults at the zoo was 2/9 the number of children. there are 700 more children than adults. The number of men was four times the number of women. The number of girls was four times the number of boys. Find the total nymber of men and boys at the zoo. Penny Nom lui répond. |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
Simplify |
2002-10-19 |
![](/images/transparent.gif) |
A student pose la question : well i need to simplify this problems out and i cant do it so here is one 3x^2+6x-45 ------------ = 3x^2+21x+30 Penny Nom lui répond. |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
Exponential notation |
2002-10-19 |
![](/images/transparent.gif) |
Ivy pose la question : I understand how to figure out for example 4 to the power of 3,what I don't understand is how to figure it out using both negative numbers and negative exponents,as an exaple -4 to the power of 6 and what makes this different that (-5) to the power of 7,please help me if you can.I am an adult taking correspondence and finding it quite frustrating. Penny Nom lui répond. |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
Is it a prime? |
2002-10-19 |
![](/images/transparent.gif) |
JV pose la question : 6x to the third power plus 5x plus 15, is that prime or not prime, and whichever it is, how can you prove it? ya dig? Claude Tardif lui répond. |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
Use each digit 1-9 only one time each,... |
2002-10-19 |
![](/images/transparent.gif) |
Megan pose la question : Use each digit 1-9 only one time each, divide the numbers into 3 groups, make one 2 digit number, one 3 digit number, and one 4 digit number. There are 6 combinations of these numbers in which you can multiply the 2 digit and 3 digit number together to get the 4 digit number (using each digit 1-9 one time each). What are they!!!!!!!!!???????????? Claude Tardif lui répond. |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
An identity in trigonometry |
2002-10-17 |
![](/images/transparent.gif) |
Alex pose la question : I really need help with proving this identity. (1+cosx+sinx)/(1+cosx-sinx) = secx + tanx Penny Nom lui répond. |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
The orthocentre |
2002-10-17 |
![](/images/transparent.gif) |
Elsie pose la question :
- Find the orthocentre of the triangle with vertices at A(-3,4), B(10, -3) and C(3,-2).
- Find the distance of point X(3,8) from the line that passes through Y(-2, -2) and Z (3, -2).
Chris Fisher lui répond. |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
The repetition of doing many straight forward problems |
2002-10-16 |
![](/images/transparent.gif) |
Dan pose la question : I am the father of a very bright 9 year old girl. She is very interested in math and she grasps concepts very quickly. I am concerned that she may become bored with the repetition of doing many straight forward problems. Her current math teacher has her working in a challenging math book and she is doing 3+ digit multiplication. She misses 2 or 3 out of ten of these problems due to simple addition errors. Should she continue to practice these problems until she can get them all correct? Or, should she move on? Kathy Nolan and Claude Tardif lui répond. |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
Integers in real life |
2002-10-15 |
![](/images/transparent.gif) |
Rica pose la question : What are the real life usages of integers? Peny Nom lui répond. |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
A sale price |
2002-10-15 |
![](/images/transparent.gif) |
Chester pose la question : A jacket is on sale for 32% off. Find the original if the sale price is $89.00 Penny Nom lui répond. |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
6% grade |
2002-10-15 |
![](/images/transparent.gif) |
Micheal pose la question : When I am driving down the road and see a sign that says for example steep grade ahead 6% grade etc etc what does this mean? Penny Nom lui répond. |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
Two problems |
2002-10-14 |
![](/images/transparent.gif) |
Seçkin pose la question : i am from turkey i am a teacher in a collage i have two difficult question which i havent solve yet these are very important for me.... Claude Tardif lui répond. |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
![](/images/transparent.gif) |
A functional equation |
2002-10-14 |
![](/images/transparent.gif) |
Rob pose la question : Let f be a function whose domain is a set of all positive integers and whose range is a subset of the set of all positive integers with these conditions: a) f(n+1)>f(n)
b) f(f(n))=3(n) Claude Tardif lui répond. |
![](/images/transparent.gif) |
![](/images/transparent.gif) |