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The area of a quadrilateral |
2004-08-25 |
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From Rich:
I would like to know how to measure the area (the formula) of a quadrilateral.
Answered by Penny Nom. |
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The radius of a circle |
2004-08-24 |
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From Peter:
If you slice any circle with a line, and call the distance of the line between intersections the "y" length and the perpendicular length to the shorter side of the curve the "x" length, what is the resulting equation for the radius?
Answered by Penny Nom. |
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50/5x - y |
2004-08-22 |
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From Rick:
Niece has a question that was marked wrong but we are unable to determine how the teacher calculated and arrived at the answer? The problem was as follows:
50 / 5x - y =
x=5
y=1
Answered by Harley Weston and Leeanne Boehm. |
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The area of a lot |
2004-08-22 |
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From Cassie:
I'm in the process of purchasing some land and I'm trying to figure out the square footage of the property. Unfortunately, it's be a while since I had to remember this type of formula. The property is 140 ft on left side, across the back it is 220.61 ft, the right side is 167.52 ft, the frontage is 105 ft.
Answered by Penny Nom. |
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15 cubic yards of dirt |
2004-08-22 |
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From Barry:
My question...what is the equivalent of 15 cubic yards of dirt?
Answered by Penny Nom. |
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130 cc. is ? |
2004-08-20 |
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From Ayrn:
130 cc. is ?
I have to put 130cc. of petroleum in a bucket how much exactly is that?
Also 110 cc.?
I have to also put 110cc. wood alcohol in a bucket aswell!
Answered by Penny Nom. |
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Golfing with Norm |
2004-08-19 |
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From Norm:
I am organizing a golf tournament with 6 American and 6 Canadian players. We play 3 rounds of golf. Is there any way to arrange that everyone plays without playing with the same person twice. Each foursome must consist of 2 Americans and 2 Canadians with one of each in a cart. Your help would be much appreciated.
Answered by Claude Tardif. |
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Golfing with Sally |
2004-08-19 |
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From Sally:
We are a group of 8 golfers (2 foursomes) and want to golf 3 games together. How can we arrange it so that we all get to golf with each other at least once?
At another venue, we have 18 golfers (3 foursomes, 2 threesomes) and want to golf 6 games together. Same question, how can we arrange it so that we all get to golf with each other at least once?
Answered by Claude Tardif. |
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A division symbol |
2004-08-18 |
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From William:
i was wondering what the mathematical name for this division sign (÷).
Answered by Penny Nom. |
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A cube is inscribed inside a sphere |
2004-08-18 |
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From A student:
A cube is inscribed inside a sphere with radius sqrt8cm. Find the
(a) length of the cube
(b) volume of the space inside the sphere but outside the cube.
Answered by Penny Nom. |
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The series from i=1 to n :ai |
2004-08-18 |
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From Ken:
a.) Explain the difference between
the series from i=1 to n :ai
and the series j=1 to n :aj
b.) Explain the difference between
the series from i=1 to n:ai
and the series from i=1 to n :aj
Answered by Penny Nom. |
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Area of a triangle |
2004-08-17 |
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From Barkie:
I'm going into tenth grade and I have a triangle who's sides measure 3ft, 4ft, and 5ft. I need to find the area however I don't know the height, or how to get it.
Answered by Chris Fisher. |
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Two water jugs |
2004-08-16 |
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From A student:
You go to a source of water with two jugs and only two jugs. One jug has a capacity of exactly three pints and the other five pints. Both jugs are opaque (you can`t see inside them) and irregularly shaped. You have no other water containers. You do not have a scale. How can you use the two jugs and only the two jugs to measure exactly four pints of water?
Answered by Penny Nom. |
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Percentiles |
2004-08-15 |
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From Gary:
Table 1
Selected percentiles for family income in the US in 1992
1 $1,300
10 $10,200
25 $20,100
50 $36,800
75 $58,100
90 $85,000
99 $151,800
Q. The percentage of families in Table 1 with incomes below $58,100 was about?
Answered by Penny Nom. |
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A probability question |
2004-08-15 |
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From Gary:
In a law school class, the entering students averaged about 160 on the last
LSAT; the standard deviation was about 8. The historgram of the lLSAT
scores follwed the normal curve reasonable well.
Q. About what percentage of the class scored below 166?
Q. One student was 0.5 above average on the last LSAT, about what percentage
of the students had lower scores than he did?
Answered by Penny Nom. |
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