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Purchasing pens and pencils |
2008-11-07 |
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Maggie pose la question :
A mechanical pencil costs 50 cents and a pen costs 25 cents. If I spend 5.00 on 17 pens and pencils, how many of each does that buy?
Penny Nom lui répond. |
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Compatible numbers |
2008-11-07 |
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Erika pose la question :
When working with compatible numbers, when do you choose to round up or down? For example: In the problem: 373 divided by 4, one could round 373 to 400 and keep the 4 the same, and the answer would be 100; OR, one could round 373 down to 360 and keep the 4 the same, and the answer would be 90. When given the problem as an assignment, which way dictates how one would round, up or down?
Penny Nom lui répond. |
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A 4 digit number |
2008-11-06 |
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Chris pose la question :
numbers 0 - 9 form a 4 digit number with no repetition.
It would round to 3000 if rounded to the nearest thousand
The digit in the tens place is twice the value of the digit in the thousands place.
It is an odd number.
It contains the largest digit.
It contains one digit less than 2.
The digit in the hundreds place is odd.
Can you find the 2 numbers?
Penny Nom lui répond. |
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The height of an equilateral triangle |
2008-11-06 |
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touqeer pose la question :
My question is that how can we find the height of an equilateral triangle without using pythagoras theorem?
Penny Nom lui répond. |
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Forming 10 from 4 fours |
2008-11-06 |
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Corderro pose la question :
I need a answer for 10 using only the number 4
Penny Nom lui répond. |
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1/8, 2/7, 1/2, 4/5, ..., ... |
2008-11-06 |
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katie pose la question :
Inductive reasoning, what 1/8, 2/7, 1/2, 4/5, what would be the next two in th sequence.
Penny Nom lui répond. |
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La somme de son carré et de son cube |
2008-11-05 |
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halima pose la question :
Trouvez un nombre entier tel que la somme de son carré et de son cube soit égale à 9 fois le nombre entier suivant.
Pierre-Louis Gagnon lui répond. |
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J'ai l'équation X^n=Y Je cherche à sortir n. |
2008-11-05 |
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Jean-Philippe pose la question :
Bonjour.
J'ai l'équation X^n=Y
Je cherche à sortir n.
Existe-t-il une équation donnant n=f(X,Y) ?
Pierre-Louis Gagnon et Émile Létourneau lui répond. |
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The cost of a steel plate |
2008-11-05 |
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Tammie pose la question :
What is the formula to calculate the following:
I have a plate of steel that is 1/4" x 48" x 192" at a price of $15.23 per square foot
What is the formula to calculate the cost if I only use 1/4" x 47-1/4" x 68-1/8" of that steel plate?
Penny Nom lui répond. |
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4 digit combinations |
2008-11-05 |
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Laura pose la question :
I need to know all the number combinations possible with a 4 digit combination with double zero in the middle???
Penny Nom lui répond. |
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A trig limit |
2008-11-04 |
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Teri pose la question :
Although I have this problem completely worked out in front of me I still cannot understand
how it was done. The problem is:
Find the limit.
lim x->0 sin2x/tan7x.
Harley Weston lui répond. |
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The area of a trapezoid |
2008-11-04 |
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kelsey pose la question :
The area of a trapezoid is approximately 150cm2...the length is 26 cm, the
weight is 5cm...what is the height????
(show me the work that you did so i can understand)
Penny Nom lui répond. |
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A rectangle is twice as long as it is wide. |
2008-11-04 |
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Nawal pose la question :
A rectangle is twice as long as it is wide.
If both its dimensions are increased by 4 m,
its area is increased by 88 m ^ 2.
Find the dimensions of the original rectangle.
Penny Nom lui répond. |
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Separating variables |
2008-11-04 |
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Terry pose la question :
by separating variables solve the initial value problem
(x+1)y' + y = 0 y(0) = 1
Harley Weston lui répond. |
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Absolute value |
2008-11-04 |
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Shane pose la question :
What is the absolute value of -4
Penny Nom lui répond. |
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