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Older Activity
01-03-2019,
05:33 PM
apple2357
started a thread
Happy new year 2019 digit problem
in
Beginning Algebra
The number 2019, its double 4038, and its triple 6057 contain all 10 digits. I am interested in the next number with this property? I have found one...
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34 replies | 1423 view(s)
01-09-2019,
07:55 PM
allegansveritatem
started a thread
what is happening here?
in
Intermediate/Advanced Algebra
This seems to be a very simple equation...but somehow the solution is eluding me. I have tried again and again and can't get it to come out right....
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32 replies | 847 view(s)
01-10-2019,
09:21 PM
LaaLa
started a thread
Quadratic Parabola equations
in
Calculus
Hi there :) Would like a little help on this problem here if thats ok? Your help is greatly appreciated! I have worked out the equation for...
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31 replies | 1005 view(s)
12-26-2018,
07:12 PM
Denis
started a thread
Bang rebus
in
Math Odds & Ends
sgeuant (1)
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26 replies | 1239 view(s)
12-24-2018,
07:47 PM
shahar
started a thread
Sinus domain: y = sin(alpha) What is the domain of y is between -1 to 1?
in
Geometry and Trig
y = sin(alpha) What is the domain of y is between -1 to 1?
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23 replies | 1027 view(s)
01-11-2019,
11:24 PM
Jomo
started a thread
Rosary and Penance - https://www.freemathhelp.com/forum/threads/114104-what-is-happen
in
Math Odds & Ends
Go back again for a few hours.
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30 replies | 674 view(s)
01-12-2019,
08:38 PM
Jomo
started a thread
GEOMETRY problem
in
Geometry and Trig
A guy wire has to run from the top of one telephone pole to the top of a 2nd pole but has to be anchored to the ground between the two poles. The...
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23 replies | 726 view(s)
01-14-2019,
12:58 PM
NeedingWD40
started a thread
Negative roots when simplifying surds
in
Pre-Algebra
Something that puzzles me: The square roots of 100 are + or -10, yes? So why when one simplifies surds are we able to ignore negative roots? ...
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20 replies | 823 view(s)
12-30-2018,
05:58 PM
Stripey
started a thread
Expected value from graph
in
Probability / Statistics
Hi. I'm trying to calculate the expected value of X using this graph and I'm really struggling for some reason. Can anyone please help? The...
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16 replies | 1108 view(s)
01-07-2019,
01:47 PM
Bobby Bones
started a thread
Solve: cos^−1(2x) + sin^−1(x) = π/3
in
Geometry and Trig
Solve: cos^−1(2x) + sin^−1(x) = π/3 I don't know where to begin with this one, other than π/3 = 60 degrees.
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19 replies | 636 view(s)
12-26-2018,
12:00 PM
Indranil
started a thread
How to prove sin 45 = 1/root 2 and root 2/2 same?
in
Geometry and Trig
How to prove sin 45 = 1/root 2 and root 2/2 same thing? I am confused.
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14 replies | 812 view(s)
12-29-2018,
04:38 PM
daveyc3000
started a thread
need help: Greg and Kristine are on opposite ends of a zip line that crosses a gorge.
in
Geometry and Trig
"Greg and Kristine are on opposite ends of a zip line that crosses a gorge. Greg went across the gorge first, and he's now on a ledge that's 15 m...
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13 replies | 906 view(s)
12-22-2018,
08:18 PM
allegansveritatem
started a thread
calculator question: Which is the best calculator for studying algebra?
in
Intermediate/Advanced Algebra
What is the best calculator for algebra? I want to use it more to check my work than to have it do the work for me. I am not as lazy as Lucy but...
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14 replies | 838 view(s)
01-15-2019,
03:15 PM
Needhelp4math
started a thread
This question makes zero sense
in
Geometry and Trig
"The flask shown is constructed from a glass sphere and cylinder. Neglecting the Thickness of the glass and assuming no loss of volume from joining...
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15 replies | 594 view(s)
12-22-2018,
08:49 PM
lekwauwa44
started a thread
Beast of a problem...Log: Solve m = (n/(n+1)) * k^ (-1/n) for N
in
Intermediate/Advanced Algebra
A young adult I was tutoring asked me this question: m = 6.29, k = 0.0882 m = (n/(n+1)) * k^ (-1/n) - solve for N. - I couldn't get around...
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12 replies | 762 view(s)
12-26-2018,
03:40 AM
Tadams052012
started a thread
Is 0 a positive value? (linear inequalities) Or is self-study book wrong?
in
Beginning Algebra
Hi there, As those of you who kindly answered my previous posts will know, I'm self studying algebra from a book called 'Teach yourself algebra: a...
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11 replies | 1053 view(s)
01-04-2019,
09:33 AM
Ted_Grendy
started a thread
Help with Finding the 1st and 2nd Derivative of an implicit function
in
Calculus
Hi all I was hoping someone could help me confirm whether the following question was correct. The question is; Find the 1st and 2nd derivative...
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16 replies | 474 view(s)
01-05-2019,
08:24 PM
allegansveritatem
started a thread
what is wrong here?
in
Intermediate/Advanced Algebra
Here is problem: Here is how I solved it: Here is the solution in back of the book: Now, how can this be? I mean, all you need to do...
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16 replies | 443 view(s)
12-21-2018,
08:46 PM
Denis
started a thread
Timely crypt
in
Math Odds & Ends
Celebration is missing a letter, we hear (4) 1 e
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13 replies | 845 view(s)
12-30-2018,
02:38 PM
apple2357
started a thread
Definition of a function: Why do we not define functions as one-to-many?
in
Intermediate/Advanced Algebra
I understand functions can only be one-to-one or many-to-one ( like f(x) = x^2), is there a reason why we choose to not define functions as...
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13 replies | 816 view(s)
12-22-2018,
01:51 AM
Otis
started a thread
Not a Meaty Text-Rebus
in
Math Odds & Ends
pig---s (1)
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13 replies | 811 view(s)
01-13-2019,
01:47 PM
Larrousse
started a thread
Unexplained properties beside Law of Sine and Cosine.
in
Geometry and Trig
According to Pythagoreans theorem these are an unexplained properties of all triangles without using the Law of Sine and Cosine. (c\times\sin...
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14 replies | 620 view(s)
Yesterday,
01:23 AM
vaderboi
started a thread
Difference between T1(N) and f(N)
in
Intermediate/Advanced Algebra
I have a homework problem and it goes like this: "Suppose T1(N) = O(f(N)) and T2(N) = O(f(N)). Which of the following are true? (Goes on to...
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18 replies | 221 view(s)
01-02-2019,
12:26 PM
KWF
started a thread
Finance Charge Per $100.00
in
Finance/Business Math
The calculation for determining the finance charge per $100.00 is determined by the following: Finance Charge/Amount financed * $100.00 = the...
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12 replies | 606 view(s)
01-09-2019,
02:34 PM
prdk21
started a thread
Equation of free fall
in
Calculus
so here is the question: "The equations for free fall at the surfaces of Pluto is s = 5.28t^2; where s is in meters, and t is in seconds. How...
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14 replies | 374 view(s)
01-18-2019,
02:18 PM
Jimi2404
started a thread
Complex number algebra
in
Beginning Algebra
Hi ive recently had a question that i can't get my head across. The equation is: (4+2i)(A+B)=6+7i The question asks to multiply out the let...
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12 replies | 368 view(s)
01-12-2019,
01:30 PM
Linux98
started a thread
Predicting Card sequence
in
Probability / Statistics
I have Been asked to calculate the Probability of being able to Predict What cards will Come out in which Order in a 52 Pack of Cards, I have been...
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10 replies | 456 view(s)
01-15-2019,
02:42 PM
Denis
started a thread
3 rebuses
in
Math Odds & Ends
va ders (2) bbbband (3) gun,jr (4)
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13 replies | 529 view(s)
01-06-2019,
11:43 PM
Harryvo
started a thread
a hard equation, please help!
in
Calculus
A3. The equation a^3 + b^3 + c^3 = 2008 has a solution in which a; b; and c aredistinct even positive integers. Find a + b + c. :confused: Multiple...
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10 replies | 391 view(s)
01-18-2019,
03:04 AM
vaderboi
started a thread
What is the assumed base when applying logs to both sides?
in
Intermediate/Advanced Algebra
say: x < 5y and I wanted to apply log to both sides: log x < log 5y What would the base be for each logarithm? Can we assume it is 10?...
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11 replies | 383 view(s)
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