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Today,
07:05 PM
mmm4444bot
replied to a thread
Amount of CO2 emissions problem
in
Intermediate/Advanced Algebra
Did you read the forum guidelines? Please show us what you tried.
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3 replies | 189 view(s)
Today,
06:27 PM
mmm4444bot
replied to a thread
free ebook I have written
in
Math Odds & Ends
For sure. I'm trying to clear up the issue, here. You seem to be focused on your games -- simply repeating what you've already posted. To many...
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7 replies | 219 view(s)
Today,
06:00 PM
Dr.Peterson
replied to a thread
Intersection point of line and polygon in 3d space
in
Geometry and Trig
I assume you are asking only about the math, not about the details of programming; and that you know at least some of the math involved. You might...
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3 replies | 30 view(s)
Today,
05:35 PM
mmm4444bot
replied to a thread
how many number possible
in
Probability / Statistics
For what?
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8 replies | 64 view(s)
Today,
05:33 PM
mmm4444bot
replied to a thread
Intersection point of line and polygon in 3d space
in
Geometry and Trig
Just out of curiosity, some questions occur right off the bat. What programming language are you using? How is your coordinate system oriented?...
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3 replies | 30 view(s)
Today,
05:29 PM
mmm4444bot
replied to a thread
Percentage of Increase/Decrease
in
Finance/Business Math
The first one. It matches the percent-change formula, described by pka in post #2: (NEW minus OLD) divided by OLD A positive result...
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4 replies | 57 view(s)
Today,
05:22 PM
mmm4444bot
replied to a thread
Touch Crypt?
in
Math Odds & Ends
You'll never git me, copper!
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5 replies | 63 view(s)
Today,
05:20 PM
mmm4444bot
replied to a thread
Touch Crypt?
in
Math Odds & Ends
The subculture of bicultural horticulturists and agriculturists make cultivations difficult. Just sayin' :cool:
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5 replies | 63 view(s)
Today,
04:49 PM
Zivojin
replied to a thread
Intersection point of line and polygon in 3d space
in
Geometry and Trig
You can maybe try to find formulas for analytic geometry in plane.
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3 replies | 30 view(s)
Today,
03:48 PM
Metronome
started a thread
Multivariable Taylor Approximation
in
Calculus
Is there a difference between local linearization/quadratic approximations and multivariable taylor approximations? They appear to be identical (for...
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0 replies | 17 view(s)
Today,
03:39 PM
Denis
replied to a thread
Touch Crypt?
in
Math Odds & Ends
Or : Copper lieutenant in religious sect (4)
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5 replies | 63 view(s)
Today,
03:34 PM
Denis
replied to a thread
Percentage of Increase/Decrease
in
Finance/Business Math
5(1 + r) = 20 1 + r = 4 r = 3 = 300%
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4 replies | 57 view(s)
Today,
02:54 PM
ketanco
replied to a thread
how many number possible
in
Probability / Statistics
thanks everyone
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8 replies | 64 view(s)
Today,
01:43 PM
abirhasan
replied to a thread
Amount of CO2 emissions problem
in
Intermediate/Advanced Algebra
Thank you for your message. I have one course called climate change and there we are solving some math problems related with climate change! I...
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3 replies | 189 view(s)
Today,
01:27 PM
JeffM
replied to a thread
how many number possible
in
Probability / Statistics
The other answers give you ways to find the correct solution more quickly and with less chance of error. How many ways can you construct a 3 digit...
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8 replies | 64 view(s)
Today,
01:04 PM
JeffM
replied to a thread
how many number possible
in
Probability / Statistics
Let's do it your way correctly. Possibility type 1: All three digits are the same. But the first digit cannot be zero. So there are exactly 5...
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8 replies | 64 view(s)
Today,
12:48 PM
Dr.Peterson
replied to a thread
how many number possible
in
Probability / Statistics
Please consider my hint: How many of these numbers have NO duplicate digits? (Think in terms of permutations, which do not repeat.)
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8 replies | 64 view(s)
Today,
12:38 PM
ketanco
replied to a thread
how many number possible
in
Probability / Statistics
Yes how many ? That is my questoon. i can get 180 too.
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8 replies | 64 view(s)
Today,
12:30 PM
pka
replied to a thread
how many number possible
in
Probability / Statistics
First & most importantly, a three digit numbers must not have zero in the hundredth position. The permutation of six taken three...
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8 replies | 64 view(s)
Today,
12:27 PM
Dr.Peterson
replied to a thread
how many number possible
in
Probability / Statistics
When a problem involves the phrase "at least one", it is often helpful to first calculate the number of ways with "none". That is, how many numbers...
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8 replies | 64 view(s)
Today,
11:57 AM
ketanco
started a thread
how many number possible
in
Probability / Statistics
from a set of : 0,3,4,5,6,7 how many three digit natural numbers can be written, where, at least two digits must be the same? answer is 80 but...
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8 replies | 64 view(s)
Today,
11:56 AM
JeffM
replied to a thread
Percentage of Increase/Decrease
in
Finance/Business Math
What you are asking is about linguistic usage. If the average price of a haircut was $5 and $20 in 1965 and 2015 respectively, it is obvious that...
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4 replies | 57 view(s)
Today,
10:56 AM
Dr.Peterson
replied to a thread
remainder from division of negative
in
Intermediate/Advanced Algebra
The meaning of "remainder" depends somewhat on context, but here is probably means "least positive residue", and what you say is correct (for the...
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1 replies | 63 view(s)
Today,
10:38 AM
pka
replied to a thread
Percentage of Increase/Decrease
in
Finance/Business Math
Suppose the NP stands for new price & OP stands for old price. Then the percent of increase/decrease is \dfrac{NP-OP}{OP}.
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4 replies | 57 view(s)
Today,
10:12 AM
KWF
started a thread
Percentage of Increase/Decrease
in
Finance/Business Math
If a regular haircut costs $5.00 in 1965, and now approximately 50 years later the same haircut costs $20.00, is this increase a 200% increase or a...
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4 replies | 57 view(s)
Today,
06:34 AM
ketanco
started a thread
remainder from division of negative
in
Intermediate/Advanced Algebra
what is the remainder of (-20)^777 divided by 6? answer is 4 do you divide -20 by 6 and get a remainder of -2, and then bring it to positive...
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1 replies | 63 view(s)
Today,
06:23 AM
Belief7
replied to a thread
Equation of Paths for Second order ODE: d^y/dx^2 - x - 2x^3 = 0
in
Differential Equations
thank you! that helped! Although, I was wondering whether we could we first formulate a system of linear DE from the given second-order DE rather...
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3 replies | 246 view(s)
Today,
05:02 AM
marcin
started a thread
Intersection point of line and polygon in 3d space
in
Geometry and Trig
I`m 3d modeler and I write scripts from time to time. Please tell me how to find intersection point between line and polygon (plane - not...
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3 replies | 30 view(s)
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