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The Mitchell Park Domes |
2006-04-01 |
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From Nicole:
I would like to know how I could find the volume underneath the Mitchell Park Domes? The Diameter of the Domes is 140ft, 85ft high and 15,000 square feet.
Answered by Stephen La Rocque. |
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The height of an isosceles triangle |
2006-04-01 |
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From Chris:
how do you work out the height of an isosceles triangle if i know the length of the base but i don't know any angles or the lengths of the sides?
Answered by Penny Nom. |
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Find the point of inflexion for the curve y = e^x/(x^2-1) |
2006-03-31 |
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From Sam:
Hi, i am trying to find the point of inflexion for the curve y = ex/(x2-1) and i got a really complex expression for y". I can't seem to solve x4-4x3+4x2+4x+3=0 so does that mean there is no point of inflexion?
Answered by Penny Nom. |
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5 men took turns weighing themselves on a scale |
2006-03-30 |
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From Bev:
5 men took turns weighing themselves on a scale. However, they weighed each other two at a time, ten times total, so that every possible combination of two men was weighed. The scale had the following read out for the pairs, 236,244,228,250,258,230,246,238,242,and 252 pounds. How heavy was the heaviest man?
Answered by Claude Tardif. |
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Can one divide a circle into 4.5 parts |
2006-03-30 |
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From Chris:
If it is possible, can one divide a circle into say, 4.5 parts (with 4 equal parts and a half part)?
Or for that matter, for any integer, n, into n/2 parts as above?]
Answered by Walter Whiteley. |
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A plant increases its height by 1/2 the first day,... |
2006-03-30 |
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From Andy:
A plant increases its height by 1/2 the first day, 1/3 the second day, 1/4 the third day and so on. How many days did it take to grow to 100 times its height?
Answered by Stephen La Rocque. |
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A fence around a pen |
2006-03-30 |
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From Daryl:
I hope you can help me out with the attached problem, It has been driving me crazy.
Answered by Stephen La Rocque and Penny Nom. |
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Superimposing images |
2006-03-30 |
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From Laurie:
I am a parent and trying to find real world applications for the math strand that includes superimposing one item on another to determine identical. The Alberta strand is match size and shape of figures by superimposing one on top of the other. I am trying to find a way to put this into context for everyday life. Any ideas?
Answered by Penny Nom. |
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Adding with mixed fractions |
2006-03-30 |
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From Becca:
can anyone help with how we change to get the same denominator with adding whole number.
example:8+7 3/8
6 1/2 + 2 5/6
Answered by Stephen La Rocque. |
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cos(3X) |
2006-03-29 |
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From Joshua:
I'm having trouble proving that cos(3X)=cos3X -(cosX)(sin2 X)
Answered by Penny Nom. |
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Exponential decay |
2006-03-29 |
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From Casey:
Fifty milligrams of a drug was injected into a patient at 6am. The drug is known to be eliminated according to the law of exponential decay. At 8.30am it was determined that 60% of the drug remained in the body. How many milligrams will remain in the body at midday?
Answered by Penny Nom. |
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Angular velocity |
2006-03-28 |
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From Ben:
How do you (a) express angular speed in terms of linear speed and (b) express linear speed in terms of angular speed?
Answered by Stephen La Rocque. |
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The cost of pizza |
2006-03-28 |
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From Kristine:
Use the formula for the area of a circle, A=3.14rsq, to determine which is a better deal: a 14-in. pizza for $10.50 or a 16-in. pizza for $11.95. Using 3.14 for pi
Answered by Penny Nom. |
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A trig identity |
2006-03-28 |
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From Iqbal:
Could you please prove,
[tan(x)-sin(x)]/sin3(x)=sec(x)/[1+cos(x)]
Answered by Stephen La Rocque. |
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A table of values |
2006-03-28 |
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From Cindy:
Create a table of values for each of the following functions: y=5x, y=52, and y=5x. I dont know to do this.
Answered by Stephen La Rocque. |
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