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tkhunny
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tkhunny
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04-12-2005
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01:20 PM
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Today,
06:49 AM
tkhunny
replied to a thread
Multiplicity Question
in
Intermediate/Advanced Algebra
(x-3)^4( x-4)(x-5)(x-8)^2 Multiplicity refers to one root only. x = 3 with multiplicity 4 x = 8 with multiplicity 2 x = 4 with multiplicity 0...
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4 replies | 89 view(s)
Yesterday,
10:35 AM
tkhunny
replied to a thread
What is the probability of telling a secret.
in
Probability / Statistics
The forum is moderated. New members' first three posts won't appear until they have been approved by a moderator. No need to post the same thing,...
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4 replies | 105 view(s)
Yesterday,
10:15 AM
tkhunny
replied to a thread
Wrap angle and Length
in
Geometry and Trig
You'll have to try harder to explain exactly what it is you are doing. Don't you need the cord thickness, too? It's not a continuous function.
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3 replies | 65 view(s)
Yesterday,
07:14 AM
tkhunny
replied to a thread
What is the probability that the company will be profitable?
in
Probability / Statistics
Good. Bad. There is a probability mass AT x = 50. What? Why do we care about 5? Pr(X=5) = 0
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1 replies | 124 view(s)
10-15-2017,
08:15 PM
tkhunny
replied to a thread
Multiplying by negative: don't understand why (x - 3)(x + 2) = (3 - x)(x + 2)
in
Intermediate/Advanced Algebra
We could have said (x-3)(x+2) = 0 and -(x-3)(x+2) = 0 have the same solution set. Zero doesn't care if you multiply it by -1.
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4 replies | 122 view(s)
10-15-2017,
08:13 PM
tkhunny
replied to a thread
How would I answer the following questions on the determinants of matrices?
in
Intermediate/Advanced Algebra
Why does it have to be 5x5? Why not try the operations out on a 2x2 and see what happens. Of course, you'll have to alter the third one a bit.
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2 replies | 82 view(s)
10-15-2017,
08:11 PM
tkhunny
replied to a thread
the median mark as a percent was 80%. The mean was 73%....
in
Probability / Statistics
You're not making sense. You just told us that half the students achieved 80% or less. How can you then say that "most students probably got lower...
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4 replies | 185 view(s)
10-15-2017,
08:08 PM
tkhunny
replied to a thread
is there a way to graph in here?
in
Administration Issues
You can upload images. Please make them big enough to see.
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4 replies | 109 view(s)
10-15-2017,
08:07 PM
tkhunny
replied to a thread
Mean, median, and mode: Which represents "the average"? (sunshine in Regina)
in
Probability / Statistics
average = mean Not much else to discuss. If it's REALLY "Normal", then average = mean = median = mode.
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2 replies | 147 view(s)
10-15-2017,
08:05 PM
tkhunny
replied to a thread
Need help to find formula of curve like Gamma or Rayleigh distribution
in
Probability / Statistics
We're really here to assist math students, not do commercial consulting. If you have a desire to describe what it is you are doing, I would be a...
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4 replies | 147 view(s)
10-15-2017,
01:43 PM
tkhunny
replied to a thread
Something that does not make sense to me in the unit/subject of rate of change
in
Calculus
It should worry you that 9 is 40% less than 15. That's no good. Don't decide that one method is ALWAYS better than another. In this case, your...
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4 replies | 194 view(s)
10-14-2017,
10:25 PM
tkhunny
replied to a thread
Transforming graphs: why is transforming x^2 to 1/2x^2 called a vertical compression?
in
Intermediate/Advanced Algebra
Do you have the same SCALE for each graph? It is possible that a stretch can look like a vertical compression. The proof is in the development. ...
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2 replies | 138 view(s)
10-14-2017,
10:13 PM
tkhunny
replied to a thread
Something that does not make sense to me in the unit/subject of rate of change
in
Calculus
It's just a different approximation. You used the average velocity between 8.08 and 8.10 for your answer. They used what might be called a...
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4 replies | 194 view(s)
10-13-2017,
08:59 PM
tkhunny
replied to a thread
Identifying trend
in
Probability / Statistics
Fair enough, then you should be slapped 0.02 times 100 times, then we'll multiply that by 100. :-)
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4 replies | 181 view(s)
10-13-2017,
04:41 PM
tkhunny
replied to a thread
Pulley sizes with fixed belt length
in
Geometry and Trig
Hey, I have an old Drill Press with just such a 5-Speed pulley system and a single speed motor. There is only one belt. :-)
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2 replies | 201 view(s)
10-13-2017,
04:38 PM
tkhunny
replied to a thread
Difficulty in Exponential-solving for "X"
in
Intermediate/Advanced Algebra
Your x is both in an exponent and outside an exponent. No good. Example: Solve xe^{x} = 1 Example: Solve e^{x} + x = 1 Rationality has...
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12 replies | 411 view(s)
10-13-2017,
04:34 PM
tkhunny
replied to a thread
Permutations
in
Probability / Statistics
Maybe. Let's see your best "Stars and Bars".
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1 replies | 77 view(s)
10-13-2017,
04:33 PM
tkhunny
replied to a thread
Company Survey: how to weight multiple units?
in
Probability / Statistics
Why do you care how many devices? Why not just count customers?
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2 replies | 95 view(s)
10-13-2017,
04:21 PM
tkhunny
replied to a thread
P(a∩b): Given P (A) ≥ 0.99 and P (B) ≥ 0.97, show that P (A∩B) ≥ 0.96
in
Probability / Statistics
1) P(A) + P(B) > P(A Union B) {SOME intersection} 3) P(A) + P(B) = P(A Union B) {NO Intersection: Can't happen} 2) P(A Union B) = P(A) ...
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11 replies | 467 view(s)
10-13-2017,
04:12 PM
tkhunny
replied to a thread
Sum of two Consecutive integers is 290. Find the integers
in
Intermediate/Advanced Algebra
You should still name the two integers (that don't exist), just for the practice.
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3 replies | 159 view(s)
10-13-2017,
04:09 PM
tkhunny
replied to a thread
Identifying trend
in
Probability / Statistics
The slope of a least-squares regression line would give you better information. What tools have you? Whoever thought of that "multiply by 100"...
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4 replies | 181 view(s)
10-13-2017,
04:08 PM
tkhunny
replied to a thread
how to derive an equation for exponential curve rising from 0 to 2500
in
Intermediate/Advanced Algebra
If only it were clear exactly what you wanted. There are MANY ways to proceed. Some idea of the data and a better idea of what you have tried that...
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5 replies | 301 view(s)
10-12-2017,
10:47 PM
tkhunny
replied to a thread
Sum of two Consecutive integers is 290. Find the integers
in
Intermediate/Advanced Algebra
Can you NAME "two consecutive integers"? Please demonstrate.
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3 replies | 159 view(s)
10-12-2017,
10:45 PM
tkhunny
replied to a thread
P(a∩b): Given P (A) ≥ 0.99 and P (B) ≥ 0.97, show that P (A∩B) ≥ 0.96
in
Probability / Statistics
Great. Word of Explanation: "intersect entirely" means one is a subset of the other. Okay, now answer the question three times.
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11 replies | 467 view(s)
10-12-2017,
10:44 PM
tkhunny
replied to a thread
Precalculus: The roots of f(x) are 3, 4, and 2. What are the roots of f(x^2+1) ?
in
Intermediate/Advanced Algebra
Have you considered x^2 + 1 = 3?
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1 replies | 84 view(s)
10-12-2017,
10:43 PM
tkhunny
replied to a thread
Can you solve this for me please? Evaluate logs, trig expression, integral
in
Intermediate/Advanced Algebra
Well, we do need to be careful of purpose. Our purpose, here, is to help math students. When you include, "I've really not all that interested...",...
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11 replies | 430 view(s)
10-12-2017,
10:41 PM
tkhunny
replied to a thread
Presence/Absence
in
Probability / Statistics
Why not? Why? Depends on your purpose.
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1 replies | 73 view(s)
10-12-2017,
04:42 PM
tkhunny
replied to a thread
P(a∩b): Given P (A) ≥ 0.99 and P (B) ≥ 0.97, show that P (A∩B) ≥ 0.96
in
Probability / Statistics
No, it doesn't mean 0.01 or 0.03. It means AT MOST, 0.01 or 0.03. What are the THREE possible arrangements of two sets in a specified universe? ...
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11 replies | 467 view(s)
10-12-2017,
04:38 PM
tkhunny
replied to a thread
Can you solve this for me please? Evaluate logs, trig expression, integral
in
Intermediate/Advanced Algebra
Well, if you're REALLY serious about your geocaching, it appears you may need a few more tools. Good luck.
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11 replies | 430 view(s)
10-11-2017,
05:06 PM
tkhunny
replied to a thread
P(a∩b): Given P (A) ≥ 0.99 and P (B) ≥ 0.97, show that P (A∩B) ≥ 0.96
in
Probability / Statistics
Consider p(A^{c}) Consider p(B^{c})
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11 replies | 467 view(s)
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"Unique Answers Don't Care How You Find Them." - Many may have said it, but I hear it most from me.
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