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• Today, 21:33
The region $R$ is a rectangle having the vertices: (0,1),\,(1,1),\,(1,-1),\,(0,-1) One way we can compute the volume is: ...
4 replies | 53 view(s)
• Today, 19:41
MarkFL replied to a thread logs in Pre-Algebra and Algebra
Okay, we are given: \ln\left(x-\frac{1}{x}-3\right)=2 Converting from logarithmic to exponential form, we have: x-\frac{1}{x}-3=e^2 ...
1 replies | 15 view(s)
• Today, 15:26
As for the $\LaTeX$, look under the "Calculus/Analysis" section of our Quick $\LaTeX$ tool. You will find it, which gives the code: ...
4 replies | 53 view(s)
• Today, 15:00
My attempt: I use Alberts hint. Please cf. the attached diagram. The conditions given are: $(1).$ Each of the 9 scholars speaks at...
2 replies | 144 view(s)
• Today, 10:48
MarkFL replied to a thread The Fonz and Geometry in Chat Room
Yes, and I was just pointing out that there can be other reasons a student fails besides lack of innate ability to understand the material, or an...
5 replies | 63 view(s)
• Today, 10:18
MarkFL replied to a thread The Fonz and Geometry in Chat Room
If a child's parents consistently put a child down, then I think this can have negative consequences on the child. I think there are a great many...
5 replies | 63 view(s)
• Yesterday, 23:16
I disagree. I believe what I wrote is one valid scenario where a student may be "afraid" of word problems, together with one valid remedy. You cannot...
9 replies | 94 view(s)
• 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,...
9 replies | 94 view(s)
• Yesterday, 22:29
I concur. $$P(A)=2\cdot\frac{10\choose3}{20\choose3}=\frac{4}{19}$$ This method also gives the same result for your second example.
5 replies | 51 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...
5 replies | 51 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...
5 replies | 51 view(s)
• Yesterday, 21:24
Hello and welcome! Some of the threads in this forum - ones that are formula (MathJax) specific - have been moved to the Math Formulas (MathJax)...
0 replies | 21 view(s)
• Yesterday, 21:09
That's a broad statement - it's just not true. Some students struggle with word problems. Why? Lack of confidence is one reason. More practice is one...
9 replies | 94 view(s)
• Yesterday, 19:04
MarkFL replied to a thread Solar Eclipse 2017 in Chat Room
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)
8 replies | 233 view(s)
• Yesterday, 03:58
Suppose that $z_n\leqslant1$. Then $z_n^2 \leqslant z_n \leqslant 1$, $z_n^3 \leqslant z_n^2 \leqslant 1$, ... , and by induction $z_n^k\leqslant 1$...
4 replies | 70 view(s)
• August 21st, 2017, 16:26
Find all the natural numbers, $m,n$ and $k$, that satisfy the equation: \
0 replies | 45 view(s)
• August 21st, 2017, 13:11
Thanks, Albert! - for your participation - and a nice solution.
4 replies | 143 view(s)
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1. Hi lfdahl,

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