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Who am I? |
2009-01-09 |
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From daphne:
im a 2-digit number less than 85.the sum of my digits is 9.the number in my ones place is twice my tens digit. who am i?
Answered by Robert Dawson and Harley Weston. |
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What day of the week will it be? |
2009-01-09 |
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From dan:
suppose 3 days ago was a wednesday. what day of the week will 365 days from today be?
Answered by Robert Dawson. |
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Brothers and sisters |
2009-01-09 |
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From Jade:
Pat, Joe, Dave,Yoly, Dolor and Alma are three brothers - and sister - pairs who
play double tennis. Brother and sister ca not play in the same pair. Pat and Yoly
play Dave and Dolor on one day. Dave and Yoly play Joe and Alma on another
day. Name each brother - and sister pair, in any order.
Answered by Robert Dawson. |
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A one cubic mile lake |
2009-01-09 |
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From dye:
how many liters are in a one cubic mile lake
Answered by Robert Dawson. |
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When is Sean's birthday? |
2009-01-09 |
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From Robin:
Sean is 4 months older than Tony. Mia is 6 months younger than Tony. If Mia's birthday is in April when is Sean's?
Answered by Robert Dawson. |
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The table of values for y=3x-10 |
2009-01-09 |
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From Jade:
How can I know the value of x for y=3x-10 in this table of values pls. include the deatails
if x=-2 y=-16
if x=3 y=-1
but how if y=2 what is x
Answered by Penny Nom. |
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A bag of coins |
2009-01-09 |
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From marina:
I have a bag of gold coins. I give 1/8 to mother then gave 1/2 of what was left to my brother
i give 2/7 of what was left to father. If i have 25 coins left. how many do i have originally.
Answered by Robert Dawson and Penny Nom. |
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Two angles are supplementary |
2009-01-08 |
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From Stephanie:
two angles are supplementary, one of the angles is 30 degrees more than double the other angle.
find the first angle, the second angle the complement of the given angle.
Answered by Robert Dawson. |
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5 yards of concrete |
2009-01-08 |
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From jon:
To mix 5 yards of concrete, how many loads will I need to mix in a 4.5 cubic
feet mixer? Thanks, jon
Answered by Robert Dawson. |
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The top half of a cone vs. the bottom half of the same cone |
2009-01-08 |
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From Tammy:
What is the ratio of the volume of the top half of a cone vs. the bottom half of the same cone? Is it seven times larger, or four times larger? and is the ratio consistent regardless of the size of the cone opening?
Answered by Penny Nom. |
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660 yards = ?? miles |
2009-01-08 |
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From Ashley:
How do I convert yards to miles, specifically, 660 yards = x miles. Please show work so I can figure other problems out.
Answered by Penny Nom. |
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(a x b) intersect (b x a) |
2009-01-08 |
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From sean:
is it possible to have two sets such that
n((a X b) intersect (b X a) =3
Answered by Harley Weston. |
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50 coins with a value of $1.00 |
2009-01-08 |
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From Ana:
you have 50 coins which have a total value of 1.00. What are the coins and how many of each do you have?
Answered by Robert Dawson. |
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Arrays of chairs |
2009-01-08 |
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From Vickie:
I am not sure how to help my son figure out one of his math journal problems.
He is in third grade and this just seems a bit much for him.
They have only been working on multiplication for about 3 weeks
and just went back to school from Christmas break.
Their other homework has been about arrays,
so I guess his teacher wants this answered in some sort of array.
Unfortunately I'm not sure.
The problem states: If you have 24 chairs find the total number
of ways the chairs can be arranged.
Answered by Robert Dawson and Penny Nom. |
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Grade 4 Foundation Skills |
2009-01-07 |
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From Susan:
Hi, I'm taking over tutoring my 15 yr old niece, who has dyslexia.
She has been being tutored by someone else,but my sister had problems
with her. My niece needs help in math and english and spelling.
Is there a test that I can do with her to see where she stands at this point?
I do believe the math is at a 3rd, or 4th grade level. I'm not sure about the
other two. Do you have any suggestions? All help is appreciated.
Answered by Victoria West. |
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