Register
Help
Remember Me?
What's New?
Activity Stream
New Posts
New Events
Mark Forums Read
Forum
Math Lessons by Subject
Calculators/Solvers
Advanced Search
Home
Activity Stream
If this is your first visit, be sure to check out the
FAQ
by clicking the link above. You may have to
register
before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.
Activity Stream
Filter
Sort By
Time
Show
Recent
Recent
Popular
Popular
Anytime
Anytime
Last 7 Days
Last 7 Days
Last 30 Days
Last 30 Days
All
All
Photos
Photos
Forum
Forums
Filter by:
Popular
Last 7 Days
Clear All
New Activity (
)
Please reload this page to view the 200+ new activity items that have been created.
Older Activity
06-18-2018,
02:32 AM
Ganesh Ujwal
started a thread
How to solve this type of problems in easy way?
in
Arithmetic
(43 X 57) ÷ (7 X 13) + (18 X 29 X 57) ÷ 47 = ? Right answer is 660 approx. I should not use calculators etc, I should do this sum in few...
see more
12 replies | 417 view(s)
06-19-2018,
05:51 PM
Jomo
started a thread
Jomo_Denis
in
Math Odds & Ends
I'll have 2000 posts before you have 20.
see more
11 replies | 246 view(s)
06-20-2018,
11:57 PM
Onigma
started a thread
Advanced Integration Substituion Application Question
in
Intermediate/Advanced Algebra
Howdy Folks, I was presented with the following question: In the solution to the problem, it begins with: I understand the processes of...
see more
9 replies | 217 view(s)
06-19-2018,
09:54 PM
thunc14
started a thread
Subset Set Theory Help
in
Intermediate/Advanced Algebra
I'm having a couple confusions on this problem set. I got the hang of a lot of the notation and concepts, but I would really appreciate a look over...
see more
8 replies | 168 view(s)
06-20-2018,
05:43 PM
dustinorr
started a thread
Geometry: What is the value of x?
in
Geometry and Trig
What is the value of x?
see more
5 replies | 119 view(s)
Yesterday,
03:02 AM
Bryson
started a thread
Factors - I need help
in
Math Odds & Ends
I need to find a number that has all but two of factors 1-24, for example: It could have factors of 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17...
see more
6 replies | 117 view(s)
06-17-2018,
01:58 PM
apple2357
started a thread
Common tangent to two parabolas
in
Intermediate/Advanced Algebra
I am trying to explore whether it is possible to find a common tangent to two parabolas? And i can't work out if it is always possible. I started...
see more
6 replies | 228 view(s)
06-17-2018,
07:39 AM
Aion
started a thread
Set notation
in
Beginning Algebra
{x \in \mathbb{N}\mid x+3 \in\mathbb{N} } This is the set of all natural numbers which are 3 less than a natural number. This is apprently...
see more
6 replies | 192 view(s)
06-21-2018,
05:08 PM
GoldSpark
started a thread
Can someone help me understand this please
in
Intermediate/Advanced Algebra
Hi guys sorry I am new in this forum. I thought why not use some help. This is finding a coordinate for x, this formula is same for y and z. I am...
see more
6 replies | 101 view(s)
06-19-2018,
08:48 AM
Denis
started a thread
Vanished posts...
in
Administration Issues
Yesterday, I suddenly got this message: "You have been banned for the following reason: No reason was specified. Date the ban will be lifted:...
see more
4 replies | 144 view(s)
06-19-2018,
12:01 PM
bumblebee123
started a thread
Simplify a Surd
in
Beginning Algebra
Hello, I have a question on surds, please can you help. I need to simplify the following: (3+2sqrt(5))/sqrt(5) I am told to get rid of the...
see more
4 replies | 100 view(s)
06-21-2018,
06:01 PM
Ireallysuckatmath
started a thread
Please someone help me figure this out ive been stuck at it forever
in
Intermediate/Advanced Algebra
I need to find the inverse of g(x)=-3x2+6x+2 I have an answer but it's not what my answer sheet is giving me and I can't figure out what I'm doing...
see more
5 replies | 83 view(s)
06-18-2018,
07:54 AM
bumblebee123
started a thread
Quadratic equation and probability
in
Beginning Algebra
PLease can you tell me where I am going wrong. I have a question from the quadratic equation which uses probability. The information I have is as...
see more
4 replies | 147 view(s)
06-20-2018,
08:32 PM
daves
started a thread
sine,sos, tan
in
Geometry and Trig
Hi I understand you divide many of these functions to get the answers but when?where? would you multiple the functions? thanks Dave
see more
3 replies | 119 view(s)
06-22-2018,
07:11 AM
Andu
started a thread
Nihl's riddle - trying to solve this thing
in
Probability / Statistics
Riddle: You are in a small labyrinth. There are 4 ways around you. At the end of each way there is a room. Three of four rooms are empty, while...
see more
4 replies | 104 view(s)
06-22-2018,
06:43 AM
Simonsky
started a thread
When to use x^2 coefficient in bracket and when to factorise outside bracket
in
Beginning Algebra
Not sure I've worded this well but here goes. When the x^2 has a coefficient >1 I tend to use the method where you split the linear term in two. ...
see more
3 replies | 104 view(s)
06-20-2018,
08:10 PM
danandmichelle
started a thread
Arrangements question
in
Probability / Statistics
Hi there, I'm a mum trying to help my 9 and 11 year old practice some ICAS questions and having trouble with some of them. You are not supposed to...
see more
3 replies | 97 view(s)
06-21-2018,
03:39 PM
Jomo
started a thread
1+2+3+...+n = (n+1)C2
in
Probability / Statistics
Can someone please explain why 1+2+3+...+n = (n+1)C2? Of course I know that they both equal n(n+1)/2. What I am really asking is why is choosing 2...
see more
3 replies | 91 view(s)
Yesterday,
11:36 AM
Indranil
started a thread
How many significant digits are in 1040. and 1040.0?
in
Beginning Algebra
How many significant digits are in 1040. and 1040.0? I am confused
see more
4 replies | 77 view(s)
Yesterday,
11:55 AM
Indranil
started a thread
How to calculate the value of 'n'?
in
Geometry and Trig
∫dx/√(2ax - x² ) = a^n sin^-1 I don't understand the equation. Could you simplify the equation here and tell me how to calculate the value of 'n'?
see more
4 replies | 69 view(s)
06-17-2018,
08:26 AM
Ganesh Ujwal
started a thread
Why is V facing away from the center?
in
Arithmetic
Eight persons - P,Q,R,S,T,U,V and W are sitting around a circular table but not necessary in the same order. Some of them are facing the center and...
see more
3 replies | 148 view(s)
Yesterday,
12:19 PM
char007
started a thread
Proving Abo****e Values Identities
in
Beginning Algebra
Can anyone help me to prove these identities in the attachment?
see more
3 replies | 47 view(s)
06-18-2018,
02:00 AM
davidtrinh
started a thread
a tricky problem about arranging books
in
Pre-Algebra
(ex) A student has 7 different textbooks. How many different ways of selecting and arranging 4 books on a shelf are there? my attempt I do...
see more
3 replies | 136 view(s)
06-21-2018,
10:10 AM
yossa
started a thread
A question in isomorphism :)
in
Intermediate/Advanced Algebra
Hello everyone, Need help with the following question please :): There shall be a non - linear copy defined by: to all - Prove that T -...
see more
4 replies | 99 view(s)
06-21-2018,
04:17 PM
ribald
started a thread
Simplifying this expression has me stumped
in
Intermediate/Advanced Algebra
The original expression is (x^2 - 9)/(x^2 - 2x - 3) This can be simplified by factoring to / That can further be simplified by cancelling out...
see more
3 replies | 64 view(s)
06-18-2018,
06:17 AM
Ganesh Ujwal
started a thread
How X + X = 2X step written?
in
Arithmetic
Question: A certain amount put a simple interest doubles itself after 4.5 years. In how much time would the amount become four times of itself? In...
see more
2 replies | 121 view(s)
06-22-2018,
08:09 AM
eckimz
started a thread
Linear system: determ inconclusive, unique, infinity solutions, find infinity s.
in
Intermediate/Advanced Algebra
Hi. I'm majoring in petroleum engineer, got this linear system in a test. So first thing I did was to make the matrices and try to 0 under the...
see more
3 replies | 103 view(s)
06-19-2018,
12:39 PM
Metronome
started a thread
Derivative of Square Root Visual
in
Calculus
https://www.youtube.com/watch?v=S0_qX4VJhMQ There is a challenge at 12:23 asking the viewer to arrive at the formula for (d/dx) sqrt(x) by...
see more
2 replies | 102 view(s)
06-18-2018,
11:46 AM
woodtekenergy
started a thread
Back-working moisture content in woodchip
in
Math Odds & Ends
Hi, im hoping you guys/girls can help me with this: i have 450kg of woodchip with 10% moisture content(This is after drying). I know before drying...
see more
2 replies | 100 view(s)
06-18-2018,
01:03 PM
MathsLearner
started a thread
Very difficult question
in
Beginning Algebra
Very difficult question do not know how to proceed. Please provide me some hints to solve it.
see more
2 replies | 89 view(s)
More Activity
No More Results
No Recent Activity