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The square root of (18*n*34) |
2008-07-01 |
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Peter pose la question :
What is the least possible positive integer-value of n such that square root(18*n*34) is an integer?
Penny Nom lui répond. |
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Some phone numbers |
2008-06-30 |
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star pose la question :
What do you think the probability of finding the last 3 digits of a telephone number if the 1st digit begins with 7?
Janice Cotcher and Harley Weston lui répond. |
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A rectangular room |
2008-06-30 |
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Peter pose la question :
A rectangular room has a perimeter of 42 feet and an area of 108 square feet. What is the length, in feet, of the shorter side?
Penny Nom lui répond. |
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Remainders |
2008-06-30 |
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vivek pose la question :
what is the remainder when 2050*2071*2095 is divided by 23 ?
this question needs to be done in as less time as possible.
Penny Nom lui répond. |
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A five-sided coin |
2008-06-29 |
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carla pose la question :
A new five-sided coin is to be made in the shape of figure 8.6
The point A on the circumference of the coin is the centre of arc CD, which has a radius of 2cm
Similarly B is the centre of arc DE, and so on.
Find the area of one face of the coin.
Harley Weston lui répond. |
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The size of a pipe |
2008-06-29 |
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payal pose la question :
hi , i want to know the area of a pipe with 63.5 mm diameter and 3718 mm height . can u pls help me
Harley Weston lui répond. |
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A concrete spectator area |
2008-06-29 |
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Paige pose la question :
an area of the school courts is 58.5m x 60.4m,
The spectator area is to be 2m wide and the concrete has to be 10cm deep
Please can you calculate the volume of concrete needs for the spectator area?
Penny Nom lui répond. |
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Percentage increase |
2008-06-29 |
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Paul pose la question :
Could you please help me with this question. I was paying $98.00 a month for my health insurance premium, now it is up to $125.83 How much of an increase is that as a percentage increase, and how can I do this on a calculator. I'd like to know how much my increase is as a percentage.
Penny Nom lui répond. |
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Fish in a pond |
2008-06-28 |
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Peter pose la question :
At the beginning of a study 24 fish are caught, tagged, and released back into a large pond containing fish. A few days later, 19 fish are caught from the pond and three of them have tags. Using this ratio, how many total fish would you expect to be living in the pond?
The answer is 152. Why is that?
Leeanne Boehm lui répond. |
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Differentiate y= (x^x^x)^x |
2008-06-27 |
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emril pose la question :
Differentiate y= (x^x^x)^x
Harley Weston lui répond. |
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How many positive integer factors of 2^2*3^2*5 are multiples of 12? |
2008-06-27 |
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Peter pose la question :
How many positive integer factors of 2^2*3^2*5 are multiples of 12
Janice Cotcher lui répond. |
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The area of a 5-point star |
2008-06-27 |
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rebecca pose la question :
Hello,
For a maths extension program i've been given the challenge of finding the area of a 5-point star with each of the 10 outside edges being a length of 1.23cm
How might I go about finding the area for such a shape given only this piece of information?
Sincerely, Rebecca
Janice Cotcher lui répond. |
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4 by 4 determinants |
2008-06-27 |
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rav pose la question :
How to solve problems of determinants which has four rows and four columns& please give me easy tips to solve permutations and combinations problems.
Harley Weston lui répond. |
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Write log_2 (1/8) = -3 in exponential form |
2008-06-27 |
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Jaime pose la question :
how do you write log2 (1/8) = -3 in exponential form?
the 1/8 is a fraction and the 2 is a base of 2
Penny Nom lui répond. |
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How many handshakes take place? |
2008-06-26 |
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Peter pose la question :
Eight people of different heights are at a party. Each person decides to only shake hands with people shorter than him/herself. How many handshakes take place?
My math book says it is 0. Is it wrong? If so, what is the answer?
Harley Weston lui répond. |
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