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Equivalent Fractions |
2007-11-07 |
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From Marlene:
find equivalent fractions with a denominator of 8 1/2
Answered by Stephen La Rocque. |
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Ratios |
2007-11-07 |
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From Barbara:
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?
Answered by Penny Nom. |
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The width of a rectangle |
2007-11-07 |
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From BJ:
The perimeter of a rectangular field is yards. If the length of the field is yards, what is its width?
Answered by Penny Nom. |
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What is a rational number between -5.9 and -6? |
2007-11-06 |
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From cathy:
What is the rational number between -5.9 and -6?
Answered by Penny Nom. |
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A 3 digit lock |
2007-11-06 |
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From Michael:
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.
Answered by Penny Nom. |
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A rectangular hyperbola |
2007-11-06 |
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From Gareth:
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.
Answered by Harley Weston. |
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La somme de deux entiers naturels est égale à 83. |
2007-11-06 |
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From abraham:
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.
Answered by Claude Tardif. |
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Ordering fractions |
2007-11-06 |
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From Mene:
this is the weight of three packages 4/5 kilograms 7/10 kilograms 1/2 kilograms order these weights from least to greatest
Answered by Penny Nom. |
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Constructing the centre of a circle |
2007-11-06 |
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From Carolyn:
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.
Answered by Penny Nom. |
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The sum of the digits of a whole number is 200 |
2007-11-06 |
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From Kristin:
If te sum of the digits of a whole number is 200, the whole number may not have
________ digits?
Answered by Penny Nom. |
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The volume of a vial |
2007-11-06 |
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From Derrick:
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.
Answered by Penny Nom. |
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The hourly rate plus time and a half |
2007-11-05 |
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From Barbara:
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
Answered by Penny Nom. |
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The area of a trapezium (trapezoid) |
2007-11-05 |
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From Scott:
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?
Answered by Stephen La Rocque and Harley Weston. |
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The height and area of a triangle |
2007-11-05 |
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From Daniella:
I need the exact formulas to find the height, the area,the lenght of triangles...
Answered by Penny Nom. |
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Percentage |
2007-11-05 |
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From K.:
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
Answered by Penny Nom. |
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