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Older Activity
Today,
04:15 AM
mmm4444bot
replied to a thread
Wall of Shame
in
News
͏ Banned for SPAM 21-Sep-18 10:06 157.119.226.206 Rkgupta rkgupta11394@gmail.com 21-Sep-18 10:05 157.119.226.206 Hp143 ...
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18 replies | 513 view(s)
Today,
04:14 AM
Maverick
started a thread
Bedmas
in
Pre-Algebra
Hi! My question: does 15 x 20/60 = 15 (20/60) ? The choices of answers are as follow: A- 15 x 20/60 + 10/60 x 5 + 8 x 30/60
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0 replies | 15 view(s)
Today,
04:08 AM
magicmath
started a thread
How do you come up with mathematical models?
in
Beginning Algebra
p = 4x/5 + 25 x is the number of years after 1980 and p is the percentageof U.S. college freshmen who had an average grade of A in highschool. ...
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0 replies | 10 view(s)
Today,
04:00 AM
mmm4444bot
started a thread
Beat Crypt?
in
Math Odds & Ends
Head off flu inside radio chamber (4)
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0 replies | 10 view(s)
Today,
03:35 AM
mmm4444bot
replied to a thread
Cryptic Word Square by Guy Jacobson & Kevin Wald
in
Math Odds & Ends
You get honorable mention, for pointing that out. ;)
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8 replies | 62 view(s)
Today,
03:34 AM
mmm4444bot
replied to a thread
Cryptic Word Square by Guy Jacobson & Kevin Wald
in
Math Odds & Ends
You got it bueno! :D
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8 replies | 62 view(s)
Today,
03:30 AM
apple2357
replied to a thread
Arithmetic Sequence
in
Intermediate/Advanced Algebra
Yeah, we discussed an extension. The original problem was generating a sequence without square numbers. I have been playing on a spreadsheet with...
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11 replies | 139 view(s)
Today,
02:58 AM
mmm4444bot
replied to a thread
Why Science Teachers Should Not Be Assigned Playground Duty
in
Math Odds & Ends
Your weird is wierd. ;)
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3 replies | 63 view(s)
Today,
02:15 AM
Masaru
replied to a thread
Why is the sum of (nCk)*(mCr-k) equal to (m+n)Cr?
in
Intermediate/Advanced Algebra
I think that now I understand. Thank you very much for your help, Dr. Peterson.:oIf you expand the left-hand side, it will be something like: ...
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8 replies | 96 view(s)
Today,
02:05 AM
Masaru
replied to a thread
Why is the sum of (nCk)*(mCr-k) equal to (m+n)Cr?
in
Intermediate/Advanced Algebra
Thank you. I think that I finally got it.:o If you expand the left-hand side, it will be something like: (nC0)*(mCr) + (nC1)*(mCr-1) +...
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8 replies | 96 view(s)
Today,
12:48 AM
gadelke
started a thread
Integral of the derivative of g(x) not equal to g(x)? - simple question
in
Calculus
(Solved - but I don't know how to delete)
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0 replies | 25 view(s)
Today,
12:45 AM
burgerandcheese
replied to a thread
Do we compute the probability as a binomial distribution?
in
Probability / Statistics
I wanted to know if I'm supposed to treat this as a binomial probability
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3 replies | 45 view(s)
Today,
12:29 AM
Jomo
replied to a thread
Arithmetic Sequence
in
Intermediate/Advanced Algebra
You tried that too. Whoa.
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11 replies | 139 view(s)
Today,
12:27 AM
Jomo
replied to a thread
Why Science Teachers Should Not Be Assigned Playground Duty
in
Math Odds & Ends
All physicists are 'kinda' wierd
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3 replies | 63 view(s)
Today,
12:20 AM
Jomo
replied to a thread
PreCalc help!!
in
Intermediate/Advanced Algebra
You need to think carefully about this. You have ad and want to get a/b. So in ad you want to get rid of the d (so divide both sides by d) and you...
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4 replies | 50 view(s)
Today,
12:17 AM
Jomo
replied to a thread
PreCalc help!!
in
Intermediate/Advanced Algebra
The work got deleted on her computer.
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4 replies | 50 view(s)
Today,
12:15 AM
Jomo
replied to a thread
Trisection of an angle
in
Geometry and Trig
I now longer entertain anyone showing me methods of trisecting angles until the presenter proves that the theorem that states it can't be done is...
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8 replies | 135 view(s)
Today,
12:01 AM
Jomo
replied to a thread
how is this read
in
Arithmetic
They are read as p sub 1, p sub 2, p sub3. We say sub because they are subscripts
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4 replies | 53 view(s)
Yesterday,
11:47 PM
Jomo
replied to a thread
Do we compute the probability as a binomial distribution?
in
Probability / Statistics
P(X = k) = C(8, k) * (3/7)k * (4/7)8-k
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3 replies | 45 view(s)
Yesterday,
10:46 PM
pka
replied to a thread
Do we compute the probability as a binomial distribution?
in
Probability / Statistics
And then what is your question?
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3 replies | 45 view(s)
Yesterday,
10:46 PM
sonicflare9
replied to a thread
velocity function help
in
Calculus
velocity function sorry if I'm unclear
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5 replies | 40 view(s)
Yesterday,
10:37 PM
Harry_the_cat
replied to a thread
STATistics help!
in
Probability / Statistics
I can't read it, but the frequency tells you the number of times that value occurs. So if you had, for example: x f 1 3
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2 replies | 35 view(s)
Yesterday,
10:33 PM
burgerandcheese
started a thread
Do we compute the probability as a binomial distribution?
in
Probability / Statistics
Question: In a survey carried out in a certain school, it is found that 3 out of 7 students passed the Mathematics test. If 8 students from that...
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3 replies | 45 view(s)
Yesterday,
10:26 PM
Dr.Peterson
replied to a thread
Why is the sum of (nCk)*(mCr-k) equal to (m+n)Cr?
in
Intermediate/Advanced Algebra
Try my suggestion, which doesn't require knowledge of the binomial theorem, and is a combinatorial proof (which means that it is based not on...
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8 replies | 96 view(s)
Yesterday,
10:23 PM
pka
replied to a thread
Why is the sum of (nCk)*(mCr-k) equal to (m+n)Cr?
in
Intermediate/Advanced Algebra
Did you read carefully reply #4? This proof does no require knowledge of the binomial expansion. Lets take off from reply # 4. If there are m men...
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8 replies | 96 view(s)
Yesterday,
10:17 PM
Harry_the_cat
replied to a thread
velocity function help
in
Calculus
What do you mean by "solve"? Do you mean find t in terms of s? OR Do you need to find the velocity function (as in your subject heading)?
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5 replies | 40 view(s)
Yesterday,
10:14 PM
Harry_the_cat
replied to a thread
How to calculate a fixed rate of interest on a Balloon Payment loan
in
Finance/Business Math
Tried a few things. I can't agree with your payment value of $194.58. I get $197.07.
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13 replies | 201 view(s)
Yesterday,
10:09 PM
Denis
replied to a thread
Cryptic Word Square by Guy Jacobson & Kevin Wald
in
Math Odds & Ends
or: SPIKE MANNA ASTER STEAL HARDY Same thing...
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8 replies | 62 view(s)
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