Melody

921 Questions
34315 Answers

-2

1731

2

+118692

Mathigon website

I just discovered a site called mathigon

https://mathigon.org/dashboard
और पढ़ें ..

Melody 2 Apr 2022

-10

596

1

+118692

Reporting problems.

There are a number of people having problems at the moment.
If you lodge an error can you please give all relevant information that you can think of.
Where you are in the world - the city or the country - is often very important information. और पढ़ें ..

Melody 16 Mar 2022

-4

1404

5

+118692

How to make an empty rectangle in Latex

I just worked out how to make an empty box of various horizonal size easily in LaTex.
This is not a recommended method, but other methods that I have tried here have not worked.
This coding is really simple. Just put letters inside और पढ़ें ..

●●●●●

Melody 15 Mar 2022

-5

859

3

+118692

HAPPY ANNIVERSARY CHRIS! (CPhill)

I just realized that you became a member here exactly 8 years ago today!

It has been great to have you here all that time

और पढ़ें ..

विषय से परेे

Melody 13 Mar 2022

-6

837

3

+118692

WELCOME BACK CPHILL !

Melody 11 Feb 2022

-6

708

2

+118692

Very interesting question. No high level maths required.

This question was posted a couple of days ago.
https://web2.0calc.com/questions/geometry_73561

I think it is really interesting. It looks much more difficult than it really needs to be. और पढ़ें ..

Melody 1 Feb 2022

-8

871

11

+118692

Members have a better experience. Their questions get more attention.

Almost everyone is posting as a guest.
If you post as a member your questions will have a far greater chance of a timely and helpful response.
If you are a genuine learner and interact with us, you will become known and answerers will do और पढ़ें ..

●●●●●●●●●●●

Melody 9 Jan 2022

-8

1

982

3

+118692

HAPPY BIRTHDAY CHRIS!

और पढ़ें ..

Melody 20 Des 2021

+4

1

5471

9

+118692

Some guidelines for question askers.

Please note:
1) Ask only one question per post.
2) When asking a question talk about what you have tried for yourself. Then people will take you more seriously and will be more able and willing to help.
3) If you get an answer और पढ़ें ..

विषय से परेे

●●●●●●●●●

Melody 4 Nov 2021

-10

1078

1

+118692

Remeniscing - a little historical humour.

I just found this old post that some of you, who have been around for a while, might find amusing.

https://web2.0calc.com/questions/look-at-the-new-leader-board

विषय से परेे

Melody 29 Okt 2021

+118692

0

Chicken:
what is the common multiple of 8 and 7

The multiples of 8 are
8,16,24,32,40,48,56,64,72,80,....
You have to find the one that is also a multiple of 7.

Melody15 Feb 2014

+118692

0

mmjl:
Ask a Math Question!
WHAT IS 30 PERCENT OF 80THOUSAND

30/100 x 80000=

Melody15 Feb 2014

+118692

0

_jacqulynnneedshelp:
what is 0.0000000000000000001 as a power of 10

It is a bit hard to read. but
say there are 18 zeros BETWEEN the decimal point and the 1 then
You would need to move the point 19 places to get it behind the 1.
Hopefully you know that this is a very tiny number.
Tiny numbers have negative powers of ten so your answer is
1. x 10 ^-19
=10 ^-19

Now I would like you to work through this web page
Jut highlight, right click the press goto.

http://www.mathsisfun.com/numbers/scientific-notation.html

Melody15 Feb 2014

+118692

0

jjone42:
degree measure in radians
330

360 degrees = 2pi radians
180 degrees = pi radians
divide both sides by 180 and you get

180/180 degrees = pi / 180 radians
1 degree = pi / 180 radians
so
330 degrees = 330* pi / 180 radians
330 degrees = 33pi/18 radians.

Melody15 Feb 2014

+118692

0

Stu:
makes sense. I got it in the first bit. Just rationalising it in an improper fashion previously. Thanks.

You are welcome.

Melody15 Feb 2014

+118692

0

tlamb:
how do i input fractions

There is no fraction button on the site calculator if that is what you mean. sorry.

If you wanted to enter 53 and 7/8
you would have to enter 53+7/8. If it were part of a larger question you would need to put it in brackets.

Melody15 Feb 2014

+118692

0

1*(9-9)*4 = 0 ...... Grmal
-1-9 +9+4= 3 ...... Melody
-1+9/9+4 = 4 ......Melody

I'm getting all the easy ones.

Melody15 Feb 2014

+118692

0

Stu:

And yes, I just had this question regarding transposing a square root posted in this thread.
side question ot, when removing Sqrt in transposing given t= sqrt2mg, solve for g. it is easiest to remove the Sqrt first I get that, but answer given is g = t²/2m. I was about to give this answer, but isnt everything under the Sqrt squared to remove it, so.. when transposing /2m shouldn't they be squared. I get that it isn't so I would just like to know why as I'm sure it is a simple answe.r. thanks. ie can't move the Sqrt with out moving the 2m to the left and squaring it also?

In your question 2mg was all under the square root sign.

So when you write it in here, you have to write sqrt(2mg)
your question is
t = sqrt(2mg)
square both sides and you get
t ² = 2mg
divide both sides by 2m and you get
t ²/(2m) = g (NOTE: you need the brackets here too otherwise you would be dividing by 2 and multiplying the whole answer by m)
g = t ²/(2m)

Now I know that you are still confused. I will look at this with you
t = sqrt(2mg)
t = sqrt(2) * sqrt(m) * sqrt(g)
t ² = [ sqrt(2) * sqrt(m) * sqrt(g) ] ²
t ² = sqrt(2) ² * sqrt(m) ² * sqrt(g) ²
t ² = 2 * m * g
t ² = 2mg
See, all the terms were squared.

Think about it for a while and then tell me if you understand.
warm regards,
Melody.

Melody15 Feb 2014

+118692

0

Stu:
How much wood would a woodchuck chuck if a woodchuck could chuck wood would be no wood chucked by the woodchuck chuck if the wood chuck chuck had Ice cream. bahahaha.

http://www.youtube.com/watch?v=WRu5pQU38K4

Melody15 Feb 2014

+118692

0

Rom:
your answer was pretty good GF. Your reasoning calling it a probability problem wasn't incorrect.

Hello Stu and Grammar Fascist,
Rom is correct.
I came at the question through the back door, but, if you came at the question from the front door, some of the logic was quite similar to probability.
You had some good ideas too Stu.
I really like that you both had a go at the question. On reflection i think that i was a little rude. Please accept my apology.
Melody.

Melody15 Feb 2014