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#76 Re: Help Me ! » LCM question » 2023-12-02 07:56:35
...But I’m now thinking that Rita could have bought 6 packets and 10 boxes. Or 12 packets and 20 boxes. Etc, etc.
Q. Is the question badly worded?
yeah i think so
they should have said something like 'what is the least number'
#77 Re: Exercises » Compute the solution: » 2023-11-30 07:18:45
1980.
#78 Re: Jai Ganesh's Puzzles » Oral puzzles » 2023-11-30 07:14:12
#5543.
#79 Re: Exercises » Compute the solution: » 2023-11-29 09:47:23
cool
so x4 means 10x + 4, 6x means 60 + x
#80 Re: Jai Ganesh's Puzzles » Oral puzzles » 2023-11-29 09:41:49
#5541.
#5542.
were the instr4uctions for these switched?
b/c the 1st has a missing term
2nd has a next term
#81 Re: Exercises » Compute the solution: » 2023-11-28 14:56:37
1978.
does 'x4' mean 'x to the 4th power'?
or is x the tens digit, so '6x' is 'sixty-ecks'?
#82 Re: Exercises » Compute the solution: » 2023-11-28 10:00:21
1977.
#83 Re: Jai Ganesh's Puzzles » 10 second questions » 2023-11-28 09:56:26
#8986.
#84 Re: Exercises » Compute the solution: » 2023-11-27 04:31:31
1975.
#85 Re: Jai Ganesh's Puzzles » 10 second questions » 2023-11-27 04:27:53
#8984.
ty for explaining gcd for fractions
does lcm work the same for decimals?
#86 Re: Help Me ! » Proving a function is bounded. » 2023-11-26 07:37:58
Hi so my question is asking to prove if 1/x is bounded when x belongs to the interval [1,infinty).This is the answer I came up with: Let M = 1 then (1 ≤ x) = (|1| ≤ x) = (-x ≤ 1 ≤ x) = (-x/x ≤ 1/x ≤ x/x) = (-1 ≤ 1/x ≤ 1) = (|1/x| ≤ 1) for all values of x on the interval for [1,infinty).
This is my proof, if the proof is wrong then tell me what I did wrong, also the wording or the order of the proof might be weird so please help me with that. I am trying to learn real analysis.
you start w/ M=1 so steps are
M≤x
|M|≤x
-x≤M≤x
-x/x≤M/x≤x/x
-1≤M/x≤1
|M/x|≤1
i dont know if this proves it
maybe dont restrict value of M
f(1)=1 is finite
maybe show f(x)=1/x is getting smaller on [1,infinity)
(by using deriv. maybe?)
show f(x)>0 on [1,infinity)
then f(x) bounded between 0 & 1
(these r just my thoughts)
(if somebody posts something different then theyre probably right- go with their ans.)
#87 Re: Exercises » Compute the solution: » 2023-11-26 05:02:32
1974.
#88 Re: Help Me ! » Sum of All Even Integers » 2023-11-25 10:33:25
Did amnkb not apologize many times for having somehow offended you, asking you please to explain what s/he was doing wrong? Did you not then criticise amnkb for "saying sorry all the time"?
ty
u & bob r rly nice <3
#89 Re: Exercises » An Unusual Tricky Exercise, Have Fun » 2023-11-25 10:30:29
so i did it wrong b/c im not a teacher?
huh
twi
#90 Re: Exercises » Compute the solution: » 2023-11-25 10:26:42
it came out even
cool
#91 Re: Jai Ganesh's Puzzles » 10 second questions » 2023-11-25 10:20:21
how is gcd for fractions defined?
#92 Re: Exercises » An Unusual Tricky Exercise, Have Fun » 2023-11-24 08:43:04
The perimeter of a square (Ps) is equal to the perimeter of an equilateral triangle (Pe).
And the area of the square (As) is ‘k’ times equal to the area of the equilateral triangle (Ae), that is As = k*Ae.
Find the...value of ‘k’
#93 Re: Help Me ! » Sum of All Even Integers » 2023-11-22 12:11:11
For any positive integer n, the sum of the first n positive integers equals n(n+1)/2. What is the sum of all the even integers between 99 and 301?
Can someone set this up for me?
The formula works for sets of integers that do not have any gaps so use the fact that evens are involved to get a continuous sequence of integers. ie:
100 + 102 + ... + 300 = 2 x (50 + 51 + ... 150)
So find ∑49 and ∑150, subtract and then [multiply by] 2.
I'm still a bit confused. Can you start this one for me?
working from bob's start & using his steps:
#94 Re: Help Me ! » Venn Diagram Mathematics » 2023-11-22 12:03:56
In a class of 50 students, 20 play Hockey, 15 play Cricket and 11 play Football. 7 play both Hockey and Cricket, 4 play Cricket and Football and 5 play Hockey and football. If 18 students do not play any of these given sports, how many students play exactly two of these sports?
Can someone set this up for me?
Ok. Here's a start:
I still can't come up with the equation. What is the correct equation to solve for x?
'set this up for me'
'what is correct eqn?'
#95 Re: Help Me ! » Find A Linear Equation » 2023-11-22 11:32:06
The relationship between Celsius (°C) and Fahrenheit (°F) degrees of measuring temperature is linear. Find a linear equation relating °C and °F if 0°C corresponds to 32°F and 100°C corresponds to 212°F.
Which one? There are two formulas here. The slope formula or the point-slope formula or both?
#96 Re: Help Me ! » Access Ramp » 2023-11-22 11:30:20
A wooden ramp is being built to reach a platform that sits 30 inches above the floor. The ramp drops 2 inches for every 25-inch run. Write a linear equation that relates the height y of the ramp above the floor to the horizontal distance x from the platform.
Can I please have a step by step explanation of how this linear equation is form?
What information in the application states that negative 2 over 25 is the slope or coefficient of x?
sry
#97 Re: Help Me ! » Mathematical geography - homework » 2023-11-22 06:45:00
Wow!
Is this a joke? What school is expecting this as a hw assignment? And what age of student?
In what way are you going to receive help here if others solve your obvious homework problems?
glad these are obvious to you 
(my response is same as bob's)
youve said when you dont show work then you need help geting started
maybe you can get OP started on Q1?
thanks! 
#98 Maths Is Fun - Suggestions and Comments » helping people 'right' way » 2023-11-22 06:37:49
- amnkb
- Replies: 1
hi bob!
you posted about helping ppl in the way they want
but how to know in advance?
poster sez 'Just answer the questions posted and keep your text math-related', gets mad if you try to explain or apologize 
(also does not keep his own text math-related)
promised to I will not post more than 3 questions per week moving forward but posts more
sounds insulting at other posters
asks Are you seeking help or teaching a mini lesson? when OP said post was his 'attempt'
says he's right when all he did was make a simple mistake
it can be very frustrating tryin to help some ppl 
you are very sweet to be so patient with him <3
plz know that you are appreciated!
#99 Re: Help Me ! » Surds problem » 2023-11-21 08:52:59
Show that (8+sqrt12) / (5+sqrt3) can be written in the form (a+sqrt3) / b
I tried rationalizing the denominator by multiplying the numerator and the denominator by 5-sqrt3 but could only get as far as (34+2sqrt3)/22
youre almost there!
all you left off was to factor 2s out and cancel off
#100 Re: Help Me ! » Product Promotion Application » 2023-11-21 07:19:55
A cereal company finds that the number of people who will buy one of its products in the first month that the product is introduced is linearly related to the amount of money it spends on advertising. If it spends $40,000 on advertising, then 100,000 boxes of cereal will be sold and if it spends $60,000, then 200,000 boxes will be sold. Write a linear equation that relates the amount A spent on advertising to the number of x boxes the company aims to sell.
I would like a step by step reply that will display how the equation was formed based on the information in the application.