# Activity Stream

• Today, 11:03 AM
Usually we do not provide complete solution, but rather help students. Since you are trying to help a 10 year I guess that I can help you. Here is a...
2 replies | 16 view(s)
• Today, 11:02 AM
In my opinion, this is an ill-posed problem. My interpretation of "690 ant dies in four days" - will include dead-ants of fourth night. Then I...
2 replies | 16 view(s)
• Today, 10:33 AM
Hello, Please help. In an ant colony, 690 ants die in four days. Each night, 35 more ants die than the night before. How many ants died on the...
2 replies | 16 view(s)
• Today, 09:53 AM
Can we get just a function that shows easily constant1, constant2 and variable? As I said I really can't figure it out
4 replies | 71 view(s)
• Today, 08:02 AM
Look at this: https://en.wikipedia.org/wiki/Mollifier#frb-inline
4 replies | 71 view(s)
• Today, 07:00 AM
Good afternoon, I know that in the long run you can never win at roulette. The casino will always win, even if you are using the Martingale...
0 replies | 9 view(s)
• Today, 01:34 AM
I am so sorry but that even made it complicated for me. sorry but I don't get it. I feel kinda dumb right now. haha. I just answered it the way I see...
12 replies | 125 view(s)
• Today, 01:29 AM
I did a very quick calculation on excel (I attached it in jpg format and sorry if you need if you can't really see it or just try.). the first column...
12 replies | 125 view(s)
• Today, 01:12 AM
I got help to get into Purdue University because whites are one of the minorities in the Quantum program. Asians were the majority. And boy oh boy...
15 replies | 257 view(s)
• Today, 12:59 AM
You do need 60/96. If you take a test and get 60 points out of 96, then what would you exact to get if the test was out of a 100 points. The answer...
12 replies | 125 view(s)
• Today, 12:56 AM
That's what I thought.
12 replies | 125 view(s)
• Today, 12:53 AM
I suspect that pka simply forgot that "none of the above" was an option. All the other numeric options were obviously wrong once you are looking at...
12 replies | 125 view(s)
• Today, 12:45 AM
This is at least true for some kids. Back in the early sixties, when I was a senior in high school taking an AP calculus course, the strongest boy in...
15 replies | 257 view(s)
• Today, 12:40 AM
oh yes sorry. sure. but I don't get why not bother saying 5/8 or 60/96. Can you explain it a bit more? thank you.
12 replies | 125 view(s)
• Today, 12:32 AM
nice one pka!
15 replies | 257 view(s)
• Today, 12:22 AM
Please don't give full solutions so quickly. It is better to let the OP try to figure it out themselves with hints. Thanks!
12 replies | 125 view(s)
• Today, 12:19 AM
I wouldn't bother saying 5/8 = 62.5%. We have 60/96, ie 60 out of 94 which is a bit more than half, so you expect to get a bit more than half of the...
12 replies | 125 view(s)
• Today, 12:05 AM
In Japan by grade six, students have a strong base in simple algebra.
15 replies | 257 view(s)
• Yesterday, 11:59 PM
As an old testing guy this question really puzzles me. Even having worked with the GRE this just does not seem usual unless it was a time waster. Oh...
12 replies | 125 view(s)
• Yesterday, 11:49 PM
A couple of subjects are e years, one pi years and the others are all irrational ages over 18.
14 replies | 139 view(s)
• Yesterday, 11:43 PM
I avoided this method, as it seems likely to be more algebra than the students taking the test would know; but the visual part of it is very nice....
15 replies | 257 view(s)
• Yesterday, 11:42 PM
Hi I've found this Sigmoid equation x = x0 + (x1 - x0)*(1 - sigmaD) But I don't know how to start. Besides this equation makes a sharper...
4 replies | 71 view(s)
• Yesterday, 11:17 PM
@Vancouverron, I wish you had posted your result. I think the the solution is really simple. Suppose that \bf{\mathcal{s}} is the length of the...
15 replies | 257 view(s)
• Yesterday, 10:54 PM
excellent!
14 replies | 139 view(s)
• Yesterday, 10:42 PM
There are 96/2 = 48 evens and 48 odds in the interval. every even no. works (try) Among the odds, only those that make n + 1 divisible by 8...
12 replies | 125 view(s)
• Yesterday, 10:21 PM
Jomo replied to a thread Trapezoid Problem in Geometry and Trig
Whatever equation you have, simply divide by 5. This is a technique I use all the time to get something to look closer to what I want.
6 replies | 75 view(s)
• Yesterday, 10:18 PM
Jomo replied to a thread Trapezoid Problem in Geometry and Trig
Hmm, maybe use your teacher's hint?
6 replies | 75 view(s)
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