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A three digit number |
2000-01-13 |
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From Manali Shah:
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.
Answered by Harley Weston. |
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Algebra |
2000-01-13 |
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From Tim Merrill:
"please help me out with these four algebra questions" - Rewrite the following using positive exponents only.
xy -3
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x -2 - Find the following quotients.
9a3+3a2+6a
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3a
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Answered by Penny Nom. |
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Parallel lines |
2000-01-12 |
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From Lori:
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.
Answered by Penny Nom. |
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Addition |
2000-01-11 |
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From Deanna:
what is the answer for 20+5+32-3+98
Answered by Penny Nom. |
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Three dimensional rectangle |
2000-01-11 |
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From Dennis Murphy:
I would like to find out the name of a Three dimensional rectangle.
Answered by Harley Weston. |
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Bar graphs and histograms |
2000-01-11 |
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From Raeluck:
What is the difference between a bar graph and a histogram?
Answered by Harley Weston. |
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Factoring by graphing |
2000-01-11 |
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From Dylan Kirkwood:
How can you factor a quadratic equation by graphing it?
Answered by Penny Nom. |
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Ratios |
2000-01-11 |
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From Cyndi:
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?
Answered by Penny Nom. |
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Parallel planes |
2000-01-10 |
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From Hugo Alvarez:
When two parallel planes are cut by a third plane, the lines of the intersection are?
Answered by Claude Tardif. |
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Phone Number Possibilities |
2000-01-09 |
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From Hamilton Weston:
How do phone companies arrive at the possible number of phone numbers that can be generated for customers?
Answered by Harley Weston. |
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Capacitor discharge rate |
2000-01-09 |
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From Bill Phillips:
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.
Answered by Harley Weston. |
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Percentages |
2000-01-09 |
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From Nancy:
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.
Answered by Penny Nom. |
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How many coins is one calculator? |
2000-01-09 |
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From Mandy Brockmann:
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?
Answered by Claude Tardif. |
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Functions |
2000-01-06 |
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From Tori Morris:
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.
Answered by Penny Nom. |
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Angles |
2000-01-06 |
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From Rayna:
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.
Answered by Claude Tardif and Walter Whiteley. |
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