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Hexagon inscribed in a circle |
2007-10-26 |
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From VIVEK:
what are the properties of a regular hexagon inscribed in a circle.
If the radius of the circle is given then how to find the side of the regular hexagon
Answered by Stephen La Rocque. |
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Related rates |
2007-10-26 |
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From David:
A trough is 12 feet long and 3 feet across the top.(look like an upsidedown triangle square). Its ends are isosceles triangles with altitudes of 3 feet.
a) If water is being pumped into the trough at 2 cubic feet per minute, how fast is the water level rising when h is 1 foot deep?
b) If the water is rising at a rate of 3/8 inch per minute when h=2, determine the rate at which water is being pumped into the trough.
thank you so much for helping me out
Answered by Stephen La Rocque. |
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(3)^1/2 * tan(t/3) = 1 |
2007-10-26 |
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From Rosie:
Please help me with finding the solution to:
(3)^1/2 * tan(t/3) = 1.
Answered by Penny Nom. |
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The length of a rectangle is twice the width |
2007-10-26 |
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From Tami:
The length of a rectangle is twice the width. The number of square units in it's arear is four times the number of units in it's perimeter. What are the dimensions of the rectangle?
Answered by Penny Nom. |
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Some four digit combinations |
2007-10-25 |
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From Larisa:
Please tell me the answer or how to get the answer of every possible digit combination of 5173, for instance1735, 1753, 1573, 1537, 1357, 1375, etc.
Answered by Stephen La Rocque. |
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Magic triangles |
2007-10-25 |
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From joshine:
i confuse about a magic triangle.but my teacher ask me to make
examples of it in 4 different magic triangle and also different pattern
can you help me about it?
Answered by Penny Nom. |
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The perimeter of a circle sector |
2007-10-25 |
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From sara:
Hi!
The area of a sector of a circle is 25 sqcm. The radius of the sector is 6 cm. Calculate the perimeter of the sector.
Many thanks!!!
Answered by Penny Nom. |
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Two mirrors |
2007-10-24 |
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From Peter:
The reflecting surfaces of two intersecting flat mirrors are at an angle θ (0° < θ < 90°). For a light ray that strikes the horizontal mirror, show that the emerging ray will intersect the incident ray at an angle β = 180° – 2θ.
Answered by Stephen La Rocque. |
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parabolic arch |
2007-10-24 |
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From ABHILASH:
How find parabolic arch perimeter.
Answered by Harley Weston. |
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A graph with 100 vertices |
2007-10-24 |
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From amarjeet:
let g be a graph with 100 vertices numbered 1 to 100. Two vertices i and j are adjacent only if i-j=8 or i-j=12. The number of connected components
in g are:
1. 8
2. 12
3. 4
4. 25
Answered by Penny Nom and Victoria West. |
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Given a six by six square, how rectangles are there in the square? |
2007-10-24 |
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From Maria:
Given a six by six square, how rectangles are there in the square?
Answered by Stephen La Rocque. |
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A sixfold increase |
2007-10-24 |
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From Fred:
If I have $500 and it grew to $3,000, what is the correct description of the increase? Is it a sixfold increase (sextupled), or a fivefold increase (quintupled)?
When I divide $3,000 by $500, the result is six, therefore, a sixfold increase?
Answered by Stephen La Rocque. |
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6(x-1)-3(x+1)-12=56+5x |
2007-10-24 |
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From Megan:
6(x-1)-3(x+1)-12=56+5x
Answered by Penny Nom. |
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The length of a rectangle |
2007-10-24 |
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From Kharez:
What is the length of a rectangle with an area of 24 square feet and a width of 4 feet?
Answered by Penny Nom. |
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Converting bases |
2007-10-24 |
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From Johanna:
Is there an easy way to convert from base to base. For example, base 5 to base 9 or base 2 to base 4 etc
Answered by Stephen La Rocque and Penny Nom. |
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