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A concrete walk around a pool |
2013-09-18 |
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From poornima:
circular Swimming pool is surrounded by a concrete walk 4 feet wide, if the area of the walk is 11/25 of the area of the pool, then the radius of the pool in feet is
Answered by Penny Nom. |
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Covering a styrofoam ball with fabric |
2013-09-11 |
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From Alice:
I am trying to create a pattern in order to cover a styrofoam ball with fabric. The pattern needs to be done in such a way as to have only a center seam, rather than several vertical lines as in slicing a melon.
Answered by Chris Fisher. |
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Intersection points and diagonals |
2013-09-11 |
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From Kenneth:
I was wondering, is there a relationship between the number of sides of a regular n-gon and the number of times its diagonals intersect?
Ie:
4 sides=1 intersect (center, diagonals form an 'X' )
5 sides=5 intersects (diagonals form a star)
6 sides=13 intersects
And so on.
Answered by Chris Fisher. |
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Miles per minute to miles per hour |
2013-09-08 |
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From Adam:
Convert 250 miles per min to miles per hour
Answered by Penny Nom. |
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A question on markup |
2013-09-08 |
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From ezile:
if the gross profit for the previous year was R125000 and for the new year its R195000 the mark up achieved was 95%....whats the new mark up
Answered by Penny Nom. |
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How we convert cm to mm? |
2013-09-08 |
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From Génesis:
How we convert cm to mm?
Answered by Penny Nom. |
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A contest with 31 people |
2013-09-06 |
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From Kevin:
There is a contest with 31 people and only one winner each week.
We play for 17 weeks.
What are the odds of winning at least one week?
The chances of winning each week are independent from previous weeks.
Answered by Robert Dawson. |
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The sum of all whole numbers from 1 to X |
2013-09-06 |
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From Tim:
How do I develop a rule for the sum of all whole numbers from 1 to X when I have no idea how to do this
Answered by Penny Nom. |
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A garden path |
2013-09-06 |
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From mary:
garden path has 8 white slabs, four of the slabs are one third grey, what area of the path is grey
Answered by Penny Nom. |
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1760 as a percentage of 5000 |
2013-09-05 |
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From ken:
how do I express 1760 as a percentage of 5000
Answered by Penny Nom. |
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A word problem |
2013-09-05 |
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From Thomas:
I'm trying to help my 9th grade child with their homework. The problem is the
Length of a rectangle is twice as long as it is wide. The perimeter is 68m. Find
It's length and width
Answered by Penny Nom. |
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2^x . 5^3 = x^4 |
2013-09-05 |
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From Zuhdina:
Hi, I got a question, 2^x . 5^3 = x^4
I want to know the value of x without using calculator, I've already done some questions in logarithm and I always stuck in the same model equation-I think if someone shows me the way, I can do the other 'stuck equations'
Answered by Penny Nom. |
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A sequence or a series? |
2013-09-05 |
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From Rahul:
Whether the following sequence is increasing or decreasing? I even do not kow whether to call it a sequence or not. an = (1/(1+n))+(1/(2+n))+....+(1/(n+n)).
I am confused. It looks like a series to me. Please help.
Regards,
Rahul
Answered by Robert Dawson. |
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6 golfers in threesomes |
2013-09-04 |
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From Gregg:
We have 6 golfers playing in threesomes for three rounds of golf. I would like each golfer to play equally with the other 5. How can this be done.
Answered by Victoria West. |
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A Hole-in-one on all four par 3's |
2013-09-04 |
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From Robert:
There are four (4) par 3's at a specific 18 hole course.
One member has the honor of making a Hole-in-one on all four par 3's.
It has taken him 8 years to do it!
How does one go about computing the odds of this TREMENDOUS accomplishment?
Respectfully,
Robert laffal
Answered by Victoria West. |
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