|
|
|
|
|
|
|
|
A three digit number |
2000-01-13 |
|
Manali Shah pose la question : My son is in 5th grade, he has a math problem. There is three digit number, which is greater than 500, can be divided by 7,9 and 11, but cannot be divided by 2,4,6, and 5. Harley Weston lui répond. |
|
|
|
|
|
Algebra |
2000-01-13 |
|
Tim Merrill pose la question : "please help me out with these four algebra questions" - Rewrite the following using positive exponents only.
xy -3 ------- x -2 - Find the following quotients.
9a3+3a2+6a -------------- 3a . . . Penny Nom lui répond. |
|
|
|
|
|
Parallel lines |
2000-01-12 |
|
Lori pose la question : Find an equation of the line parallel to the given line containing the given point. x + y = 2; (1,2) We know parallel line have the same slope and we know the answer y = -x + 3. Penny Nom lui répond. |
|
|
|
|
|
Addition |
2000-01-11 |
|
Deanna pose la question : what is the answer for 20+5+32-3+98 Penny Nom lui répond. |
|
|
|
|
|
Three dimensional rectangle |
2000-01-11 |
|
Dennis Murphy pose la question : I would like to find out the name of a Three dimensional rectangle. Harley Weston lui répond. |
|
|
|
|
|
Bar graphs and histograms |
2000-01-11 |
|
Raeluck pose la question : What is the difference between a bar graph and a histogram? Harley Weston lui répond. |
|
|
|
|
|
Factoring by graphing |
2000-01-11 |
|
Dylan Kirkwood pose la question : How can you factor a quadratic equation by graphing it? Penny Nom lui répond. |
|
|
|
|
|
Ratios |
2000-01-11 |
|
Cyndi pose la question :
My name is Cyndi and i am in middle school in the 8th grade. The questions i am about to ask come from my book. My return address is PR_Angel1@yahoo.com The directions on a can of lemonade mix say to use 8 tablespoons of mix to make 2 quarts of lemonade. Heathcliff wants to make 7 quarts of lemonade. How many tablespoons of mix should he use? and In a recent year, the ratio of men to women in the United States armed forces were about 9 to 1 - if there are 90 men in a random group of military personnel, how many women would you expect to find in the group?
- in a group of 90 military personnel, how many of them would you expect to be women?
- what percent of armed forces personnel were women in that year?
Penny Nom lui répond. |
|
|
|
|
|
Parallel planes |
2000-01-10 |
|
Hugo Alvarez pose la question : When two parallel planes are cut by a third plane, the lines of the intersection are? Claude Tardif lui répond. |
|
|
|
|
|
Phone Number Possibilities |
2000-01-09 |
|
Hamilton Weston pose la question : How do phone companies arrive at the possible number of phone numbers that can be generated for customers? Harley Weston lui répond. |
|
|
|
|
|
Capacitor discharge rate |
2000-01-09 |
|
Bill Phillips pose la question : I need to be solve for t in the following rate problem for an electrical capacitor. Vr = E(e^-t/RC), e=nat. log 2.718 raised to the -t/RC power. Harley Weston lui répond. |
|
|
|
|
|
Percentages |
2000-01-09 |
|
Nancy pose la question :
What is the best way for a parent to explain how one calculates percentages? ie. Commission is $54268. Total Sales $403114.00 from that number how do you calculate the percentage of sales of various expenses. Penny Nom lui répond. |
|
|
|
|
|
How many coins is one calculator? |
2000-01-09 |
|
Mandy Brockmann pose la question : Tom weighed 1 pen and his calculator with 4 coins. Then he weighed his calculator and 3 pens with 12 coins. How many coins is one calculator? Claude Tardif lui répond. |
|
|
|
|
|
Functions |
2000-01-06 |
|
Tori Morris pose la question : Consider the function f(x)=x2-3. Which of the following are true? - f(1)>f(0)
- f(2)>f(-3)
- f(2)=f(-2)
- f(-1)=f(3).
More than one answer can be true. Penny Nom lui répond. |
|
|
|
|
|
Angles |
2000-01-06 |
|
Rayna pose la question : I am doing a presentation report on angles which has to be fun and entertaining as well as educational. I am having problems locating resources on angles that give me ideas of fun entertaining projects. My lecture is to be about 20 minutes long infront of a class of 11th and 12th graders. Please Help if you can. Claude Tardif and Walter Whiteley lui répond. |
|
|