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Complements and supplements |
2007-08-31 |
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Gretchen pose la question :
An angle is its own complement. Find the measure of a suppllement to this angle.
Stephen La Rocque lui répond. |
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A turtle tank |
2007-08-30 |
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Natasha pose la question :
I have a tub that we are going to use for a turtle tank. it is 3 feet long 1foot 7in wide and 1foot 5 in deep. how many us gallons will this tub hold?
Harley Weston lui répond. |
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Exponential form |
2007-08-29 |
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Emily pose la question :
Write the Exponential Form of 125 x 25 and 81 x 27.
Stephen La Rocque lui répond. |
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The digital lock for a cell phone |
2007-08-29 |
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Hollie pose la question :
i have a four digit lock code on my cell phone and cannot remember what it is. i know that it does not contain a 2 or a 4 and none of the numbers are repeated. the numbers range from 0 to nine and the only way to figure out what the code is, is to try randomly. I was wondering if you could give me a list of possible combinations using the information i gave you to make it easier to crack the code.
Penny Nom lui répond. |
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Rotational energy needs |
2007-08-29 |
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will pose la question :
how much energy in KW do i need to start and subsequently rotate a 4 ton fly wheel of 1 metre radius at 12 rpm?
Stephen La Rocque lui répond. |
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Similar triangles |
2007-08-29 |
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James pose la question :
Question: In the triangle ABC, X is a point on AC. AX = 15 m and XC = 5 m. The angle AXB is 60 degrees and the angle ABC is 120 degrees. Find the length of BC.
I am sure to an extent that this has to do with similar triangles, but I am not certain.
Harley Weston lui répond. |
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A quadrilateral problem |
2007-08-29 |
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James pose la question :
The sides BC and AD of a quadrilateral ABCD are parallel. X is the midpoint of AB. The area of ABCD is Y. Find the area of the triangle CXD in the terms of Y.
Harley Weston lui répond. |
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Percentage differences |
2007-08-29 |
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Camilla pose la question :
If a store sells a certain syle of skirt, an in the first week they sell 13,
in the second week 20, in the third week 17 and in the fourth week 23, calculate the percentage
difference between the highest and the lowest weekly sale.
Stephen La Rocque and Harley Weston lui répond. |
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Induction problem (divisible by 11) |
2007-08-29 |
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James pose la question :
Show that 27 * (23 ^ n) + 17 * (10 )^ (2n) is divisible by 11 for all positive integers n.
Stephen La Rocque and Penny Nom lui répond. |
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Fractions, ratios and percentages all mixed together |
2007-08-29 |
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Charon pose la question :
Example:
x : 1/4% :: 9 3/5 : 1/200
Stephen La Rocque lui répond. |
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2,6,7,21,22,66,67 |
2007-08-28 |
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EDWIN pose la question :
this doesnt make any sense to me....... i cant find the pattern...
2,6,7,21,22,66,67
Leeanne Boehm and Stephen La Rocque lui répond. |
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The number of minutes in n hours |
2007-08-28 |
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sharquea pose la question :
the number of minutes in n hours
Leeanne Boehm and Stephen La Rocque lui répond. |
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Question |
2007-08-28 |
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Reneilwe pose la question :
Above is a plan of a house. The scale is 1 cm = 0,8 metres.
3.1 Describe briefly the rooms you come to as you go through the front door
and down the passage. Say whether each room is on your left, right, ahead,
etc
3.2 Find the actual dimensions of the bathroom (length and breadth)
3.3 Give the length of the passage in metres.
3.4 Give the area of a carpet needed to cover the passage
3.5 A child is in the lounge, at the door into the passage. He pushes a toy
car, and it take 2 seconds to go from one end of the passage to the other.
Calculate the speed at which the car travels, first in metres per second,
then in kilometres per hour. Give the answer correct to 1 decimal place.
Penny Nom lui répond. |
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Counting stitches and changing units |
2007-08-28 |
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Lim pose la question :
Jack is making stuffed toys. Each toy needs 360 stitches. Ten stitches take 15 seconds.One toy needs
57cm of cotton for stitches. How many centimetres of cotton does Jack use in an hour?
Stephen La Rocque lui répond. |
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Factor completely 2x^2-3x-5 |
2007-08-28 |
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melissa pose la question :
how do you factor this completely:
2x^2-3x-5
Stephen La Rocque and Penny Nom lui répond. |
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