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Set up two simultaneous equations |
2007-05-21 |
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Admire pose la question :
The cost of producing windscreen wipers blades at a factory ais partly fixed (due to operating overheads) and partly dependent on the number of blades produced. It costs $300 to produce 1000, and $600 to produce 5000 blades. How much would it cost to produce 24000 blades?
Penny Nom lui répond. |
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A push button lock |
2007-05-21 |
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Werner pose la question :
I have a push button lock (the numbers entered does not have a start and end i.e. 1234 = 4321 or 2341 = 3241 ...)
So if it is a 4 digit code and you have 10 buttons (0 to 9) there should be 5040 (?) possibilities and how would I list these unique combinations
Penny Nom lui répond. |
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Constant rate of sand falling in a cone |
2007-05-20 |
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Nhi pose la question :
Sand is falling into a conical pile . After 5 min. the pile has radius 24 and height 26 . After 7 min. tell how far the point c. is from the top of the cone (A).
Stephen La Rocque lui répond. |
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Total of 100 with 1, 2, 3, 4, 5, 6, 7, 8, 9 |
2007-05-20 |
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Tyler pose la question :
use all the numbers shown, any of the following four operations +,-,x, and division
and parentheses to make a total of 100. You may not change the order of the
numbers, or use them more than once.
1 2 3 4 5 6 7 8 9
Please help asap I can't figure this out.
Thank you
Tyler
Stephen La Rocque lui répond. |
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Areas of polygons |
2007-05-20 |
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kendra pose la question :
i have questions on how to find the area of pentagons, hexagons, and nonagons.
i was asked to find the area of all of them and they gave me either the length of one side or the perimeter.
Stephen La Rocque lui répond. |
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Probability tree |
2007-05-19 |
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Patrick pose la question :
My question involves a video game called Guild Wars. In the game you can have modifications(mods) on items. One such mod is that you have a 20% chance to halve the casting time of a spell. You can have 2 of these mods available to you. Now, it is to my understaning that combined, you would have a 32% chance to halve the casting time and a 4% chance to quarter the casting time. Is this correct?
Stephen La Rocque lui répond. |
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Base seven |
2007-05-19 |
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Dan pose la question :
A number X is converted to base 7 and becomes a four digit number. Its leftmost digit is removed and written again as the rightmost digit. The number thus obtained is twice X. Find the decimal representations of all such numbers X.
Penny Nom lui répond. |
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Parabolas in the real world |
2007-05-18 |
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Katherine pose la question :
Hi, my name is Katherine, and my mean old math teacher just assigned us a test in which
we have to write two examples of how parabolas are used in the real world, each one page
single spaced, size 12!! I know you have already answered some questions like this, but
I still don't understand the whole baseball thing, and any other way parabolas are used.
And how I can write a whole page on it. But that's my problem, not yours, I just need help
with a little explanation on how parabolas are actually used today. I know this might be kind
of confusing for you, but imagine how it is for me!!
Stephen La Rocque lui répond. |
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If I know the total is 15% over cost, what is the cost? |
2007-05-18 |
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Theresa pose la question :
I have a job that is $25,250 total to complete the job. The customer asked how
much am I charging. I told him I was charging 15% over the Cost. What is the
formula to calculate the cost of the job?
Stephen La Rocque lui répond. |
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Using FOIL for (2x - 6)^2 |
2007-05-18 |
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TONI pose la question :
I am having a problem finding examples of how to solve (2x-6)^2.
Stephen La Rocque lui répond. |
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Divisibility |
2007-05-18 |
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Ashish pose la question :
A number is divisible by 2^n if the last n digits of the number are divisible by 2^n.
Why?
Penny Nom and Claude Tardif lui répond. |
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(3x-2(x-3)+2)(3x-2(x-3)+2) |
2007-05-17 |
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Jeff pose la question :
(3x-2(x-3)+2)(3x-2(x-3)+2)
Penny Nom lui répond. |
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Finding square roots |
2007-05-17 |
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Chandler pose la question :
I would like an easy way to find the square root of a number.
Gabriel Potter lui répond. |
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Students in rows |
2007-05-17 |
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Ashi pose la question :
the student of three classescan be made to stand into rows having same number of students. there are 24,36 and 60 students in the classes. how many maximum number of student will stand in each row.
Stephen La Rocque lui répond. |
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Lateral area of a right cone |
2007-05-17 |
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Crystal pose la question :
In my homework the question says the lateral area of a right cone is 226.08 cm cubed.
the slant hieght is 12 cm. Find the total surface area. How do I do that?
Stephen La Rocque lui répond. |
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