From Scott: I want to build a octagonal deck. The wood I am using are cut in 8 foot lenghts. What I want to know is if the sides of the octagonal are 8 feet, what is the diameter. Also what are the angles of each side? Answered by Penny Nom.
From Abraham: What are the equations of all horizontal and vertical asymptotes for the curve y=x/(x(x2-4))(the answer is y=0, x=-2, x=2, but I want to know how to get that algebraically.And why isn't x=0 another asymptote?) Answered by Leeanne Boehm.
From Judy: A whale's head is 72 inches long... its tail is as long as its head plus half the length of its body, and its body is half the entire length. Who long is the whale? Answered by Penny Nom.
From Nadia: 1* La somme de 3 multiples de 6 consécutifs est 72.Quels sont
ces nombres?
2* Dans la fabrication d’un alliage, on utilise 5g de manganèse
pour 32g de fer.
a) Quelle quantité de manganèse retrouve-t-on dans un morceau
de cet alliage s’il contient 512g de fer? 00015166
b) Quelle est la masse totale de ce morceau si le fer et le manganèse
en sont les seules composantes?
From Nathan: i am trying to find the equation for a mirror for a laser experiment. the mirror is parabolic but my question is how do you find the equation when you know only the focus and the diameter the mirror diameter is 520 mm and the focus is at 1024 mm. would you just use the measurements in the equation instead of "nice numbers" or what. Answered by Penny Nom.
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Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.