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The largest 4-digit odd number |
2007-09-21 |
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From Courtney:
what is the largest 4-digit odd number you can make with 1 - 9. You can not repeat digits within a number
Answered by Harley Weston. |
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A fraction sequence |
2007-09-21 |
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From marissa:
i have read the examples you have on fraction sequences, but i am still having
a hard time understanding how to figure this out. for example:
__ 1 2/5 __ 3 __ __ __ __7
Answered by Stephen La Rocque. |
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Letter number sequence |
2007-09-21 |
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From Hope:
The challenge problem of the week in 6th grade math is a letter number sequence.
J 1 F 8 M 1 A 0 M 1 J 0 J 1 _ _ _ _ _ _ _ _ _ _
They are to find the next 10 letters and numbers in the line.
They were given a hint : look at the letter sequence by themselves and you should recognize it.
Does it just repeat starting with the F 8 M 1 etc.?
Thank you for your help.
Answered by Claude Tardif. |
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Algebraic fractions |
2007-09-21 |
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From Yvonne:
Would you please help me on the following 2 questions?
1. Given that 3x-5y / 2x-y = 2/3, find the value of 2x/5y.
2. If 3x-5y / 7x-4y = 3/4, find the value of x/y.
Answered by Penny Nom. |
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32 cis30degrees / 4 cis150degrees |
2007-09-21 |
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From Michael:
Could you please help with this one.
32 cis30degrees / 4 cis150degrees
Answered by Stephen La Rocque. |
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Choosing 3 numbers from 36 |
2007-09-21 |
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From Jon:
How many distinct combinations can be made when choosing 3 numbers from 36?
IE you can only choose each number once
Answered by Victoria West. |
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Metres per minute to miles per hour |
2007-09-20 |
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From Angela:
If a person is traveling 150 meters per minute, what is their speed in miles per hour?
Answered by Stephen La Rocque and Harley Weston. |
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How students learn math in other countries |
2007-09-20 |
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From Patricia:
I'm desperately searching the web for information on how students learn math in other countries. Years ago I had some worksheets that explained the addition algorithm as it was taught in other countries. That is the sort of thing I need. I teach 6th grade math in an urban school and have many students from other countries (Mongolia, Somalia, Ivory Coast, Honduras, Serbia) I want to celebrate their heritage while helping them learn the basics of 6th grade math.
Answered by Diane Hanson. |
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Points that are 15 units from the origin |
2007-09-20 |
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From Paula:
Find the coordinates of any point(s) 15 units away from the origin with an
x-coordinate of 9.
I was given the answer: (9,12) and (9,-12), but I do not understand how these numbers
were calculated. Thank you for your help!
Answered by Stephen La Rocque. |
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(5C squared + 14C + 11) divided by (5C + 4) |
2007-09-20 |
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From John:
(5C squared + 14C + 11) divided by (5C + 4)
Answered by Harley Weston. |
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Area of an irregular lot |
2007-09-20 |
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From Joanne:
I found your web site through ask.com & it's great. Really hoping you can help me. We are looking at purchasing an existing home with a lot size that is advertised at 2.04 acres, however, even with my limited math skills I know this is not correct.
Their calculation takes the deepest part of the lost (179 feet) multiplied by the widest part of the lost (497.26 feet) as if it was a perfect rectangle. As you can see from the faxed diagram it is far from rectangular in shape.
Can you advise as to the true lot size? As I mentioned we are looking at this property as a purchase so time is of the essence.
I have also faxed this information (with the diagram) to the number listed on your web site. Thank you so much for your help.
Answered by Harley Weston. |
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Solving an equation with fractions |
2007-09-20 |
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From Len:
I am having a brain cramp or maybe I just forgot some basic math,
but I am having trouble solving for "r" in your truncated cone example
where r/(r+w)=r/R or r/(r+282)=911/1728. Could you refresh my memory
by showing the steps to solve for "r"?
Answered by Harley Weston. |
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The hypotenuse |
2007-09-20 |
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From Kasey:
What is the hypotenuse of 96 squared and 108 squared?
Answered by Penny Nom. |
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Least Common Multiples |
2007-09-20 |
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From Aiyanna:
What is The Lcm Of 3,7,and 8 Because my Teacher gave me That and he didnt even know the answer....
I Worked and worked but I Couldnt Find It.....
Answered by Penny Nom and Victoria West. |
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What is the inverse function of y=x^3 +x? |
2007-09-19 |
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From saman:
what is the inverse function of y=x^3 +x
Answered by Harley Weston. |
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