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Yesterday, 23:08
I disagree with this...I think it is the societal attitude that it's okay to fail at math that is part of the problem. Someone says to their friends,...
5 replies  36 view(s)

Yesterday, 22:23
If we have 2000 people, 300 of which are women, then the probability that all 300 women will be on the same team is given by:
P(A)=\frac{{1700...
4 replies  33 view(s)

Yesterday, 22:01
I think your second method is correct. Suppose we call the teams $X$ and $Y$...and now we need only look at one team, so let's look at team $X$. If...
4 replies  33 view(s)

Yesterday, 19:04
Yesterday during the big event, we had pervasive heavy cloud cover and intermittent rain. Today, sunny and clear all day. Story of my life...(Giggle)
7 replies  214 view(s)

Yesterday, 18:30
https://www.nasa.gov/imagefeature/2017totalsolareclipse
7 replies  214 view(s)

Yesterday, 10:17
7. To find the area of a triangle, you can use two sides and the angle between them.
As the three angles in a triangle add to $\displaystyle...
2 replies  43 view(s)

Yesterday, 10:11
4. We have two sides and the angle between them, so we need to use the Cosine Rule.
$\displaystyle \begin{align*} b^2 &= a^2 + c^2  2\,a\,c\cos{...
2 replies  43 view(s)

Yesterday, 09:59
1. By applying the sine rule we have
$\displaystyle \begin{align*} \frac{\sin{ \left( A \right) }}{a} &= \frac{\sin{ \left( B \right) } }{b} \\...
2 replies  43 view(s)

Yesterday, 09:12
Here is this week's POTW:

Let $n$ be an even positive integer. Write the numbers $1,2,\ldots,n^2$ in the squares of an $n\times n$ grid...
0 replies  25 view(s)

Yesterday, 09:11
Congratulations to MarkFL for his correct solution, which follows:
I would consider the parabola:
y=ax^21 where $0<a$
And given its...
1 replies  78 view(s)

August 20th, 2017, 12:06
... for construction of this tikz sketch, you used the coordinates from my MS paint sketch?
11 replies  190 view(s)

August 20th, 2017, 01:29
Hey Peter! (Wave)
I edited your post to remove the duplicate content. Sorry for the late reply, I was busy "powering through" a tedious 3 hour...

August 19th, 2017, 21:16
$\sqrt{(\sqrt{3})^2+(7)^2}=\sqrt{52}$ ...
2 replies  70 view(s)

August 19th, 2017, 17:09
@ I like Serena ...
Nice sketches. What software did you use to make them? I do mine on MS Paint.
11 replies  190 view(s)

August 19th, 2017, 10:58
I did so to calculate the force R in terms of W.
The forces labeled R in the diagram are the forces acting on the rods by the weight of the disc....
11 replies  190 view(s)

August 18th, 2017, 17:25
$\displaystyle \sum F_y = 0 \implies 2N = 3W \implies N = \dfrac{3W}{2}$
Torques about the hinge for one of the rods ...
$R \cdot 2r +...
11 replies  190 view(s)

August 18th, 2017, 12:24
not 100% sure this is it ... still pondering the hinge where the rods meet.
11 replies  190 view(s)

August 17th, 2017, 02:10
Small quibble...axis of symmetry is:
t=\frac{1}{105}
So, since the parabola opens up, the vertex is a minimum, so the minimum distance will be...
8 replies  166 view(s)
 Date of Birth
 September 6
About masters
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 BS Mathematics, East Tennessee State University
BS Computer Science, East Tennessee State University
MS Mathematical Sciences, East Tennessee University
MS Information Technology
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He who knows not, and knows not that he knows not, is a fool, shun him; He who knows not, and knows that he knows not, is a child, teach him. He who knows, and knows not that he knows, is asleep, wake him. He who knows, and knows that he knows, is wise, follow him.
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