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• Today, 12:53 AM
I suspect that pka simply forgot that "none of the above" was an option. All the other numeric options were obviously wrong once you are looking at...
12 replies | 133 view(s)
• Today, 12:45 AM
This is at least true for some kids. Back in the early sixties, when I was a senior in high school taking an AP calculus course, the strongest boy in...
15 replies | 258 view(s)
• Yesterday, 10:54 PM
excellent!
14 replies | 139 view(s)
• Yesterday, 05:41 PM
It is going to be tough to help on problems that either have no solution or are not correctly stated.
14 replies | 139 view(s)
• Yesterday, 03:58 PM
Thanks jomo. One of the problems with getting old is that I do not see well. In any case, if students insist on giving a problem in jpegs,...
14 replies | 139 view(s)
• Yesterday, 02:49 PM
I have trouble reading your attachment. Is the first problem to solve for x given \dfrac{\sqrt{2^{(x-2)}} + \sqrt{2^{(6-x)}}}{\sqrt{2^{(6-x)}}...
14 replies | 139 view(s)
• Yesterday, 02:24 PM
14 replies | 139 view(s)
• Yesterday, 02:16 PM
Thinking about this problem algebraically may not be the most intuitive approach, but it was the one that seemed obvious to me. Superficially, you...
3 replies | 65 view(s)
• 12-16-2018, 12:42 AM
Doing arithmetic involving the \pm sign is highly prone to sign errors. (\pm \sqrt{17} - 5)^2 + 10(\pm \sqrt{17} - 5) = \{ (\pm \sqrt{17})^2 +...
4 replies | 202 view(s)
• 12-15-2018, 12:01 AM
That story is so depressing that, as consolation, I am going to blow my diet by having an Armagnac and chocolates.
16 replies | 413 view(s)
• 12-14-2018, 11:41 PM
Jomo This was triggered by response # 7, which was not a question but a purported answer to the original questions. I do not deem questions by a...
19 replies | 477 view(s)
• 12-14-2018, 11:17 PM
pka He wasn't the OP in any case so his questions are irrelevant.
19 replies | 477 view(s)
• 12-14-2018, 10:46 PM
d = (x - b) * s. a = bs. \text { ASSUME } a > 0 < b. Because a is an amount of money and b is a price, it is reasonable to assume that both...
2 replies | 130 view(s)
• 12-14-2018, 10:44 AM
First, what is higher education healthcare? There is no doubt that the educational system is a mess, but has it been hospitalized? Second, I...
16 replies | 413 view(s)
• 12-13-2018, 09:51 PM
I worked out the answer using basic algebra, but why on earth would anyone think that this is a useful problem for teaching arithmetic?
10 replies | 268 view(s)
• 12-13-2018, 11:26 AM
Halls Viona is reading some book in physics that seems to be more than a bit casual in its use of mathematical notation. She really needs to give...
3 replies | 214 view(s)
• 12-12-2018, 06:32 AM
The problem with romantic poetry is that once you take the music away, the sense left behind is often very small. Take away all of Daudet's sibilants...
13 replies | 339 view(s)
• 12-12-2018, 12:01 AM
Thanks. I do try. The real difficulty is deciding what a student's limits are. What I see in those I tutor is that they are frustrated by a...
13 replies | 339 view(s)
• 12-11-2018, 10:17 PM
I NEVER tutoye my tutees.
13 replies | 339 view(s)
• 12-11-2018, 10:14 PM
No?
13 replies | 339 view(s)
• 12-11-2018, 07:25 PM
No problem. The problem with TEACHING math is that steps that have become obvious through experience to the teacher are left out. I see w =...
15 replies | 425 view(s)
• 12-11-2018, 02:56 PM
Some useful basic rules. a * 1 \equiv a \equiv 1 * a. Rule 1. \dfrac{b}{1} \equiv b. Rule 2. c \ne 0 \implies \dfrac{c}{c} = 1. Rule 3. ...
15 replies | 425 view(s)
• 12-11-2018, 02:04 PM
Are you serious? (4 - 2a) * a = 4a - (2 * a * a) = 4a - 2a^2, right? a = \sqrt{3} \implies (4 - 2\sqrt{a}) * \sqrt{a} = 4\sqrt{3} -...
15 replies | 425 view(s)
• 12-11-2018, 01:10 PM
OK. Let's take this in steps. As denis said, it is a mathematical fact that \dfrac{a}{b} * c = \dfrac{a}{b} * \dfrac{c}{1} = \dfrac{ac}{b} =...
6 replies | 291 view(s)
• 12-11-2018, 11:28 AM
15 replies | 511 view(s)
• 12-11-2018, 12:03 AM
LOL Gotta keep an eye on that guy Satan.
7 replies | 243 view(s)
• 12-10-2018, 11:57 PM
Hmm. This is of course true, but I don't think it quite resoves the OP's confusion.
6 replies | 291 view(s)
• 12-10-2018, 11:48 PM
Coinsurance is the percentage of the market value that the insured is obliged to insure. On a 15,000 dollar house with a coinsurance requirement of...
6 replies | 291 view(s)
• 12-10-2018, 10:02 PM
Well, I am lost. We start with a summation symbol referencing k, but nothing to sum and neither a starting nor ending value for k. We have a...
7 replies | 266 view(s)
• 12-09-2018, 05:51 PM
You have 20 agents, each working 7 hours a day and each averaging 6 calls an hour. That implies your current volume of calls is indeeed 20 * 7 * 6...
5 replies | 279 view(s)
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