# Activity Stream

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• 05-10-2018, 07:34 PM
Here is the problem: 29. A person walked from home at the rate of three miles per hour (mph), and then ran home along the same route at 6 mph....
30 replies | 1205 view(s)
• 05-14-2018, 04:06 PM
Hey. I'm working on polynomials at the moment, but I can't wrap my head around this. https://imgur.com/a/nWJ11hd I understand that there...
22 replies | 799 view(s)
• 05-22-2018, 04:39 PM
In a certain country, each couple stops having children if and only if they have a female. After many generations, what will the sex ratio in this...
15 replies | 267 view(s)
• 05-15-2018, 11:38 AM
For one quarter, a home owner's water bill was $9.38. The water company charges$6.50 for the first 1,200 cubic feet or less, and $0.40 per hundred... 12 replies | 437 view(s) • 04-29-2018, 08:56 PM I need to make 1 9 9 2(in that order) equal 93. I can use any operation that doesnt require another number(e.g factorials but not cube roots). IDK... 11 replies | 659 view(s) • 05-19-2018, 11:53 AM thank you for your help in advance it is problem number 10 below. if there is any way to show the steps I really appreciate it. the answer is... 11 replies | 339 view(s) • 05-15-2018, 04:34 AM I have gotten this question I'm not sure how to go about. "A cyllinder shaped hole, 10 inches long, is drilled through a sphere. Explain the... 12 replies | 290 view(s) • 05-09-2018, 02:32 PM f(x)={1,when x is rational 0,when x is irrational} Is the above function periodic? If so, can we comment on its period? 11 replies | 341 view(s) • 05-15-2018, 08:04 PM Hi Im trying to figure out how I should work ut the following problem: Let's say Jim recently won the Lotto jackpot of$15 million so he decided...
11 replies | 435 view(s)
• 05-23-2018, 11:21 AM
If we add 3.46 and 2.3 we get 5.76. we can round it to two significant numbers 5.8 because there is the least two significant digit 2.3 but If we...
12 replies | 273 view(s)
• 05-05-2018, 11:03 AM
I'd like to apologize for my awful grammar, but I hope someone can help me figure this out I wrote the exercise down with my pen, and then the...
12 replies | 470 view(s)
• 05-03-2018, 11:25 AM
;)
7 replies | 456 view(s)
• 05-09-2018, 03:11 AM
10% of a stock of 1000 light bulbs are faulty. If you randomly choose a sample of 10 light bulbs, what is the probability that one is faulty? I...
11 replies | 406 view(s)
• 05-17-2018, 07:13 PM
I created an account several years ago on here and posted some personal information in my profile. Can a moderator message me and help me gain access...
10 replies | 498 view(s)
• 05-07-2018, 06:44 AM
Hi! I've been staring blind at this problem for quite a while now, but I can't figure it out. It is the following: What's wrong with the...
10 replies | 355 view(s)
• 05-23-2018, 02:37 AM
Problem # 12 and 14(which I couldn't finish please help) can you help me verify that they're correct? Sent from my Z982 using Tapatalk
11 replies | 237 view(s)
• 05-20-2018, 09:56 PM
How to calculate the value of b, if the equation is 1/T^2=1/T^b?
10 replies | 236 view(s)
• 05-22-2018, 09:00 PM
I don't know how to start, I think 16 = geometric mean of 4x+x. Help me find the perimeter and area idk how to even start the problem. Sent from...
9 replies | 221 view(s)
• 05-04-2018, 11:13 AM
Answer the following with well-detailed diagrams. 1. A vertical aerial stands on horizontal ground. A surveyor positioned due east of the aerial...
7 replies | 418 view(s)
• 05-23-2018, 10:29 AM
Hi everyone, I need linear help. Given (R ^ 3): . . . . .U\, =\, \mbox{Span}\left\{(1,\, 1,\, 2),\, (2,\, 2,\, 1)\right\} . . . . .W\,...
10 replies | 214 view(s)
• Today, 11:30 AM
Question: ABCDE.......is a regular polygon with n sides. Write an expression for the size of angle ACD in terms of n. So I drew this: This...
11 replies | 99 view(s)
• 05-02-2018, 08:40 PM
5 million times 5 percent would be 5000000 X 0.05. When you do this on a calculator you get 250000 but when you do it on paper you end up with more...
6 replies | 398 view(s)
• 05-03-2018, 08:18 PM
Jomo started a thread What is the sum? in Math Odds & Ends
Let A be the set of all positive integers whose factors are 2, 3 and 5. If you add the reciprocals of all the numbers of A, then what will the sum...
8 replies | 297 view(s)
• 05-08-2018, 04:43 AM
1.34: A motorist starts and drives at a constant speed V_1\, \mbox{km/h}. After t_1 hours, another driver starts from the same location and drives...
7 replies | 357 view(s)
• 05-01-2018, 12:21 AM
I'm not sure if this is allowed since there are a couple problems, but I really need the help. I'm terrible at math so any help is greatly...
8 replies | 349 view(s)
• 05-17-2018, 01:06 PM
Hi, there was this question on my AS maths paper and me and my class cannot agree on how to answer it... it went like this. Prove that every prime...
8 replies | 242 view(s)
• 05-15-2018, 04:25 AM
Hi, I'm sitting with this question that has been bugging me: "You have two containers, A and B, each holds two types of marbles, red and blue. ...
7 replies | 227 view(s)
• 05-02-2018, 03:52 AM
I am having issues working out a seemingly very basic problem. I have a piece of specialized cardboard which is 187 x 97mm and I have to order...
6 replies | 341 view(s)
• 05-18-2018, 08:53 PM
Hi, good night. I am a student who try to learn calculus alone(maybe it be a impossible task), but, let's go to the problem: Determine the...
7 replies | 219 view(s)
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