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Equivalent Fractions 2007-11-07
Marlene pose la question :
find equivalent fractions with a denominator of 8 1/2
Stephen La Rocque lui répond.
Ratios 2007-11-07
Barbara pose la question :
There 100 cars in lot A and 20 in lot B, after the attendant moved 20 cars from lot A into lot B. what was the ratio number of cars in A to the number of cars in lot B?
Penny Nom lui répond.
The width of a rectangle 2007-11-07
BJ pose la question :
The perimeter of a rectangular field is yards. If the length of the field is yards, what is its width?
Penny Nom lui répond.
What is a rational number between -5.9 and -6? 2007-11-06
cathy pose la question :
What is the rational number between -5.9 and -6?
Penny Nom lui répond.
A 3 digit lock 2007-11-06
Michael pose la question :
We have a 3 digit lock that only allows for 5 possible numbers to be used. (The numbers can repeat) What are the total number of combinations that can be created.
Penny Nom lui répond.
A rectangular hyperbola 2007-11-06
Gareth pose la question :
2. Consider the rectangular hyperbola xy = c2 with parametrization (x, y) = (ct, c/t), and t 6= 0.
i. Derive (i.e. do not just quote) the equations of the tangent and normal at the point P with (parametric) coordinates (cp, c/p).
ii. Consider the points P : (cp, c/p) and Q : (cq, c/q) on the hyperbola. Find the equation of the straight line that joins the points P and Q.
iii. Consider a point R : (cr, c/r) also on the hyperbola, and suppose that in the triangle PRQ, \PRQ = 90◦. Prove that the normal (to the hyperbola) at R is parallel to the line PQ.

Harley Weston lui répond.
La somme de deux entiers naturels est égale à 83. 2007-11-06
abraham pose la question :
La somme de deux entiers naturels est égale à 83. Si on divise le plus grand par le plus petit , on obtient 4 comme quotient et 17 comme reste. Quels sont les deux nombres ? Justifier clairement la réponse. Merci de me répondre au plus vite.
Claude Tardif lui répond.
Ordering fractions 2007-11-06
Mene pose la question :
this is the weight of three packages 4/5 kilograms 7/10 kilograms 1/2 kilograms order these weights from least to greatest
Penny Nom lui répond.
Constructing the centre of a circle 2007-11-06
Carolyn pose la question :
I have a line segment AB. I need to divide a segment into 3 parts that are congruent. Please help how to divide it. The answer that I was given previous was not the way the teacher wanted it.

I also need information on how to find the center of a circle given an arc.

Penny Nom lui répond.
The sum of the digits of a whole number is 200 2007-11-06
Kristin pose la question :
If te sum of the digits of a whole number is 200, the whole number may not have ________ digits?
Penny Nom lui répond.
The volume of a vial 2007-11-06
Derrick pose la question :
An empty vial has a mass of 65.92 g. If the vial has a mass of 202.91 g when completely filled with liquid carbon terachloride (d = 1.59 g/cm3), what is the volume of the vial? I have tried several solutions but none i can come up with seem to be correct.
Penny Nom lui répond.
The hourly rate plus time and a half 2007-11-05
Barbara pose la question :
simon arrive to work at 8:15am - and left at 10:30pm if simon gets paid by the hour at a rate of $10.00 and time 1/2 for any hours worked over 8 in a day how much did he get paid?

a.120.25
b. 160.75
c. 173.75
d. 180
e. 182.50

Penny Nom lui répond.
The area of a trapezium (trapezoid) 2007-11-05
Scott pose la question :
How can we calculate this I do not understand? A trapezium of area 126m2 has parallel sides of length 3m and 4m. How far apart are the parallel sides?
Stephen La Rocque and Harley Weston lui répond.
The height and area of a triangle 2007-11-05
Daniella pose la question :
I need the exact formulas to find the height, the area,the lenght of triangles...
Penny Nom lui répond.
Percentage 2007-11-05
K. pose la question :
I am trying to figure out the percent a student has accomplished some goals. My mind is drawing a complete blank...can you help!

Here are the figures I'm looking at making into a percentage:

Goal #1: yes=136, no=8
Goal #3: yes=131, no=13

Penny Nom lui répond.
 
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