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Pythagorean equation |
2008-02-27 |
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From Judy:
X^2 + Y^2 = 5^2
Graph all ordered pairs in the coordiante plane that satisfy the Pythagorean equation, x squared plus y squared equals five squared
Answered by Stephen La Rocque. |
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A proof in geometry |
2008-02-27 |
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From Kimberly:
I'm trying to write a proof for the following: If all altitudes are equal in an equilateral triangle then all sides are equal.
Answered by Stephen La Rocque and Penny Nom. |
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Multiple guess |
2008-02-27 |
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From debbie:
What is the probability of getting 6 out of 10 (a,b,c,d,e) questions correct, by random selection?
Answered by Stephen La Rocque. |
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Two regular pentagons |
2008-02-27 |
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From Shirley:
Regular pentagon QRSTU has a side length of 12 centimeters and an area of
248 square centimeters. Regular pentagon VWXYZ has a perimeter of 140
centimeters.
I need to find its area.
Answered by Stephen La Rocque. |
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What number has exactly 51 divisors? |
2008-02-26 |
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From Lisa:
What number has a Tau which equals 51? In other words, what number has exactly 51 divisors? It must be a square of some kind!
Answered by Penny Nom, Victoria West and Harley Weston. |
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A line drawn between 2 vertices |
2008-02-26 |
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From Arshad:
what is a line drawn between 2 vertices which are not next to each other called.
Answered by Penny Nom. |
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I cut the cylinder at a 45 degree angle |
2008-02-26 |
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From Shannon:
I have a cylinder with a radius of 2' 1 5/8".
How do I calculate the radius increase when I cut the cylinder at a 45
degree angle?
Answered by Harley Weston. |
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A percentage problem |
2008-02-26 |
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From Suzanne:
In a class of 40 students, 80% are business majors. Of the 24 students
who passed the mid-term examination, 75% are business majors. What
percentage of students in the class who are not business majors passed
the examination?
Answered by Penny Nom and Claude Tardif. |
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Integrate (4+x^2) / (x (2+x)^2) |
2008-02-25 |
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From Russell:
integrate (4+x^2) / (x (2+x)^2)
I really need to know the steps involved in doing this integral, I already have
the answer through wolfram integrator but for some reason can not
get to the answer given. Please help
Answered by Harley Weston. |
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A right triangle |
2008-02-25 |
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From Ali:
The length of a hypotenuse of a right triangle is 2 metre more than the longer leg. The length of the longer leg is 7 metre more than the length of the shorter leg. Find the number of metre in length of each side of the right triangle.
Answered by Stephen La Rocque. |
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cos(2x)=(cos x)^2- (sin x)^2 |
2008-02-25 |
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From azarnia:
comment démontrer que : cos(2x)=(cos x)˛_(sin x)˛
Answered by Maxime Fortier Bourque. |
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Combien y a t il d amis dans le groupe |
2008-02-25 |
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From vaucher:
un groupe d amis souhaite organiser une sortie si chacun donnait 14 € il manquerait 4 € mais si chacun donnait 16€ il y aurait un excedent de 6 € combien y a t il d amis dans le groupe
Answered by Maxime Fortier Bourque. |
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A Norman window |
2008-02-25 |
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From Jason:
If the perimeter of a Norman window is 20 feet, what is the maximum area of the window?
Answered by Stephen La Rocque. |
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10 squares drawn one inside another |
2008-02-25 |
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From Rajesh:
There are 10 squares drawn one inside another.The diagonal of the inneremost square is 20 units. if the distance b/w the corresponding corners of any two successive squares is 1 unit, find the diffrence between the areas of the eigth and seventh square counting from the innermost
Answered by Stephen La Rocque. |
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All possible arrangements of the word "PROBLEM" |
2008-02-25 |
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From student:
Consider all possible arrangements of the word "PROBLEM". If a word is picked at random, find the probability that
(a) the word starts with a vowel
(b) the word ends with a consonant.
Answered by Harley Weston. |
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