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Milliliter conversion |
2009-11-29 |
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From Jan:
I am trying out a new bath salt recipe for one of my clients that has little children. Here then is the question, the recipe for color changing bubble bath calls for 0.15ml dry FD&C color. Since the recipe came from Australia, I have not a clue of how to change this into USA measurments
Answered by Penny Nom. |
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A place value problem |
2009-11-29 |
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From Ivy:
My tens digit is 4 less than my thousands digit. My ones digit is twice my tens digit. My ten thousands digit is one less than my ones digit. My hundreds digit is the sum of my tens and thousands digit. My thousands digit is 6.
Answered by Penny Nom. |
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The graph of f(x)=1/x -2 |
2009-11-29 |
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From Kapilan:
Please answer the following question:
Sketch the graph of f(x)=1/x -2
Answered by Harley Weston. |
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The dimensions of a rectangular room |
2009-11-26 |
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From crystal:
. The length of a rectangular room is 7 feet longer than its width. The area of the room is 60 feet. What are the dimensions of the room?
Answered by Penny Nom. |
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What number comes next? |
2009-11-25 |
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From Mark:
Can someone help and give me the break down of how to solve. 5,3,1,-1
Answered by Penny Nom. |
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Six-letter words |
2009-11-24 |
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From christine:
How many six-letter words (not necessarily an English words) are there in which exactly three of the letters are z's?
Answered by Claude Tardif. |
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Solving two equations, one with a square root |
2009-11-23 |
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From kacie:
y = square root of x+3
x-4y = -7
im having trouble with this problem...i have to find where they intersect.
Answered by Harley Weston. |
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The triangle formed by the tangent and the coordinates axes |
2009-11-23 |
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From Nirmala:
Given that y=1/x, x is not equal to zero. Prove that the area of the triangle formed by the tangent and the coordinates axes is 2.
Answered by Harley Weston. |
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A 24" circumference pipe |
2009-11-21 |
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From Cliff:
How long does a pipe with a 24" circumference need to be to hold 2 cubic feet?
Answered by Penny Nom. |
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A simplification |
2009-11-21 |
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From Lou:
In the following problem, [(7)/(x+2)]-[(x+8)/(4-x^2)]+[(3x-2)/4-4x+x^2)]
what steps do you use to convert the middle portion to become +[(x+8)/(-4+x^2)]?
The answer to the problem is supposed to be (11x^2-18x+8)/(x+2)(x-2)^2
Answered by Penny Nom. |
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Pieces of metal in a container |
2009-11-20 |
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From sheri:
I need to estimate how many pieces of metal are in a container that is 3 feet by 3 feet and 2 feet high.
the metal pieces are 1" round and 1/2 centimeter thick. I've never been any good at math.
please help.
thanks,
Sheri
Answered by Robert Dawson. |
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Two overlapping circles |
2009-11-19 |
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From Raraa:
There are two identical circles . The edge of one circle is at the middle point of the other circle. There were overlapped . The area of the overlapped surface is 20000 square centimetres . How do I find the radius of the circle rounded to the nearest whole centimetre ?
Answered by Penny Nom. |
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The graph of f(x-2) |
2009-11-19 |
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From Kapilan:
Hi please answer the following question:
Given the function f(x)=x^2 sketch the graph of f(x-2)
Answered by Robert Dawson. |
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Factoring |
2009-11-19 |
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From danyelle:
81x^2+36x+4
factoring i dont understand it at all
Answered by Robert Dawson. |
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Ascribing a value to 1/infinity |
2009-11-19 |
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From Jack:
Hello, and, in advance, thanks for answering.
I came across the problem of ascribing a value to 1/∞ (one divided by infinity) recently, I heard many things:
that it is infinitesimally small (i.e. .0000000000...1 the most intuitive), that it is 0 (the most ludicrous of them
all in my mind), and that it is not definable (which makes the most sense, although is a bit of a let down).
I know that lim (x->∞) 1/x = 0 and this is often used as an argument for all three possibilities. So
what's the ruling on this? And, I know this question has already been answered, but for a little modification;
is there any way to prove the answer that seems to be the most prevalently used (not definable as ∞ is a concept)
with mathematical logic? Or is it just because of the definition of ∞?
Answered by Robert Dawson. |
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