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Stewart's Theorem |
2005-01-17 |
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From Amy:
In triangle ABC, AB=4, AC=6 and AD=5, where D is the midpoint of BC. Determine BC.
Answered by Chris Fisher. |
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Numbers that John likes |
2005-01-16 |
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From Garrett:
John likes 400 but not 300; he likes 100 but not 99; he likes 3600 but not 3700. Which does he like?
900
1000
1100
1200
Answered by Penny Nom. |
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The area of a trapezoid |
2005-01-15 |
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From Doak:
What is the total acreage of a pie-shaped piece of land that is:
146' f
ront
85' back
246' each side
The front and back lines are fairly straight....a trapezoidal shape.
Answered by Penny Nom. |
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The length of a chord |
2005-01-13 |
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From A parent:
Does anyone have a formula for calculating the chord length for a segment of a circle when you know the radius and the enclosed angle or radian ?
Answered by Penny Nom. |
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convertir une duree en heure et minute |
2005-01-12 |
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From Sébastien:
pouvez vous me donner la formule permettant de convertir une duree en heure et minute precise
pour exemple : 589 minutes donne 10h35min. Quelle serait donc la formule pour passer directement de 589 min a 10h35 (sans avoir 9h81)?
Answered by Claude Tardif. |
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The tide at a boat dock |
2005-01-11 |
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From Abraham:
The tide at a boat dock can be modeled by the equation
y = -2cos(pi/6 t) + 8,
where t is the number of hours past noon and y is the height of the tide, in feet. For how many hours between t=0 and t=12 is the tide at least 7 feet?
Answered by Penny Nom. |
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The game of 24 |
2005-01-10 |
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From Manny:
HI - my daughter and I are being driven crazy by the following "24" question 7,7,3,3. She's good at the game (well, better than I am) and her teacher gave her this one. Any insight would be appreciated!
Answered by Claude Tardif. |
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Profit |
2005-01-10 |
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From Abraham:
The profit a coat manufacturer makes each day is modeled by the equation P(x)=-x2+120x-2000, where P is the profit and x is the price for each coat sold.For what values of x does the company make a profit?
I don 't understand this problem(how to do it) and hope you can help me.
Answered by Penny Nom. |
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Arcs and chords |
2005-01-09 |
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From Aniesha:
A chord of a circle is 48 centimeters long and is 10 centimeters from the center of the circle. Find the radius?
Answered by Penny Nom. |
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Acres |
2005-01-08 |
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From Jim:
What size is this lot?
And is there a location on the web where you can plug in lot dimensions to figure acreage?
North = 180ft
South = 210ft
West = 336ft
East = 244 ft
Answered by Harley Weston. |
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ln(hx+n) |
2005-01-07 |
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From Anibal:
if I have the eq.
y=hx+n
and I want to know ln(y), how do I process
ln(hx+n)?
Answered by Penny Nom. |
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Quadratics |
2005-01-05 |
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From Usman:
Hi, in my Grade 11 Functions math class we have been assigned the task of finding jobs and careers related to quadratics, I have done many searches but have been unsuccessful, then I saw your website and e-mailed. I also have to use an example of a math problem that the job uses, then solve it, this will all compile on bristol board for a presentation. I would greatly appreciate it if you could send me some links and references of sources that refer to this subject.
Answered by Harley Weston. |
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There are 4 contestants in a bicycle race. |
2005-01-05 |
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From Robert:
There are 4 contestants in a bicycle race. In how many different orders can they cross the finish line?
Answered by Penny Nom. |
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Express the answer in dollars |
2005-01-03 |
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From Abraham:
My question on this question is if I wrote just 5280 because they say they want it in dollars, is that correct or is the only answer, 5279.61 as their answer key says? How should I have known to give it with cents? Should I give myself full credit?
Answered by Harley Weston. |
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An isosceles triangle |
2005-01-03 |
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From Abraham:
The question is,"Triangle ABC is not isosceles.Prove that if altitude BD were drawn, it would not bisect AC."My question is If an altitude is drawn wouldn\'t that mean automatically its isosceles because, In a triangle the sides opposite congruent angles(in this case the right angles)are congruent? What am I thinking wrong?
Answered by Harley Weston. |
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