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Two Quadratics 1999-10-08
From Jason On:
Solve the following equations,expressing solutions in the form p + iq.
  1. sqr(x) + 2x - 1 = 0,
  2. sqr(x) + 2x - 3 = 0.

Answered by Harley Weston.
A sum of two squares 1999-10-08
From Marksmen:
what is the smallest whole number that can be written two ways as a sum of two different perfect squares? i.e.11squared plus 3 squared is 121+ 9=130 and7 squared + 9squared=49 +81= 130. Are there any smaller? I am stumped!
Answered by Claude Tardif.
sin x = x/10 1999-10-07
From Amandeep Grover:
Solve the equation sin x = x/10
Answered by Harley Weston.
A trig limit 1999-10-06
From Yannick Gigandet:
What is the limit, as x approaches pi/3, of (1-2cosx) / sin(x-(pi/3)) ?
Answered by Penny Nom.
Palindrome 1999-10-06
From Chris Ware:
What is a non paladromic number?
Answered by Claude Tardif.
Logic and mathematical logic 1999-10-06
From Polly Mackenzie:
What is the difference between logic and math logic?
Answered by Walter Whiteley.
A googol 1999-10-06
From Kevin Brennan:
describe to me a guegoll is that how u spell it?

it sounds like that
Answered by Penny Nom.

Common factors 1999-10-06
From Tommygirl98:
Ok I have a question about common factoring I'm not to sure if you could help me but it's worth a try here it goes. Ok I have a test on Friday and i'm having trouble understanding how to do it here's an example,

Factor,
-10 + 2b how do you do it and what do they mean by factor?
Answered by Penny Nom.

La longueur des segments formant un triangle 1999-10-05
From Michel Provencher:
Connaissant la longueur des segments formant un triangle,comment détermine-t-on chacun de ses angles si:
  1. il S'agit d'un triangle rectangle

    Sachant que la somme des angles d'un triangle est de 180 degrés et sachant par conséquant qu'un des angle est de 90 degrés (triangle rectangle) il reste donc, 90 degrés à partager entre les 2 angles restant. Si les 2 segments formant l'angle droit sont de même longueur on obtient un angle de 45 degrés pour les angles restant soit 1/2 angle droit ce qui ne me pose évidement aucun problème. Quel relation, S'il y en a une, y a t-il entre la longueur de ces 2 segments et les angles restants.

  2. il S'agit d'un triangle quelconque

Answered by Claude Tardif.
The circumference of a circle 1999-10-05
From Mara Frost:
what is the formula to find the circumference of a circle, or if there is no formula, how do you find the circumference of a circle?
Answered by Penny Nom.
towers of cubes 1999-10-05
From Sanker:
I need help to solve this Rules for bulding towers of cubes
rule 1 The number of cubes on the bottom layer is always one less than the number of squares on the grid
rule 2 Each new layer is made with one cube less than the layer underneath it.
  1. Investigate how many different arrangements there are of 4 cubes on top of 5 cubes on a two by three grid

  2. investigate the number of different arrangements of six cubes on top of seven cubes on a two by four grid

  3. investigate the relation between the number of arrangements of cubes and the size of the grid
    • when there are two layers of cubes
    • when there are more than two layers of cubes

Answered by Walter Whiteley.
Regular and irregular shapes 1999-10-03
From Samuel Tighe:
What is the difference between a regular shape and an irregular shape? Are a rectangle and a triangle regular or irregular shapes?
Answered by Walter Whiteley.
Percentage increase 1999-10-03
From Ann Allen:
I am a a student in the 12th grade. I need to know how to calclulate the following: A percentage increase from 2.0% to 9.5% is what percentage?
Answered by Harley Weston.
Two limits 1999-10-02
From Jennifer:
How do I find

lim (1-cosx)/(x^2) as x-> 0

and

lim (tan3x)/x as x->0
Answered by Harley Weston.

A donkey and his carrots - part 2 1999-10-02
From Sarah Klink and Brenda Gamble:
Does anyone know the solution of the donkey who had to carry 3000 carrots to the market which was 1000 miles away? The donkey can only carry 1000 carrots at a time and he eats one carrot every mile he walks but this is only when he is carrying carrots. How many carrots can get to the market with the donkey carrying them?
Answered by Claude Tardif.
 
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