Melody

921 Questions
34316 Answers

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Mathigon website

I just discovered a site called mathigon

https://mathigon.org/dashboard
lire plus ..

Melody 2 avr. 2022

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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. lire plus ..

Melody 16 mars 2022

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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 lire plus ..

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Melody 15 mars 2022

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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

Hors sujet

Melody 13 mars 2022

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WELCOME BACK CPHILL !

Melody 11 févr. 2022

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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. lire plus ..

Melody 1 févr. 2022

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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 lire plus ..

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Melody 9 janv. 2022

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HAPPY BIRTHDAY CHRIS!

Melody 20 déc. 2021

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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 lire plus ..

Hors sujet

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Melody 4 nov. 2021

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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

Hors sujet

Melody 29 oct. 2021

+118730

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complete the square: y=x^2-6x+7

I am not certain of what you are bieing asked to do but this is what I would assume

subtract 7 off both sides
y-7 = x^2-6x

The x co-efficient is -6
(-6/2) ² = 3 ² = 9
add 9 to both sides

y-7+9 = x^2 - 6x +9

y+2 = (x-3) ²

Melody30 nov. 2013

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Not sure but this is what I think

Part One = INT[SQRT(Plaintext)]
Part Two = Plaintext – {INT[SQRT(Plaintext)]}^2
-------------------------------------
If plain text = 28 then
sqrt28=5.29...
INT(5.29) = 5 (I assume INT stands for integer part)

28 - (5squared) = 3
--------------------------------------

If plaintext = 123456 then
sqrt123456 = 351.36...
INT(351.36..)=351

123456 - (351squared) = 255
--------------------------------------------

Melody30 nov. 2013

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INT[SQRT(123456)]

=INT 351.36

=351

I am assuming int stands for integer

Melody30 nov. 2013

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I think it would be proportionally quicker to bury more than 1 at a time.

Melody30 nov. 2013

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me not good @ espaino

Well, if you can't explain your question, how can anybody answer it?

Bueno, si no puedes explicar tu pregunta, ¿cómo puede alguien responderla?

Melody30 nov. 2013

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Melody30 nov. 2013

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What is your question?

Quelle est votre question ?

Melody30 nov. 2013

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I got 177.6 degrees

Melody30 nov. 2013

+118730

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whats the ratio of 4.63 to 8,21 in fraction form

4.63:8.21
463:821

This can be transformed to 463/821 if you just want to use it in most maths problems but

I think it is more correct to say
463/(463+821) = 463/1284

I happy to hear more thoughts on this.

an example
There are 3 boys and 5 girls in a room
The ratio of boys to girls is 3:5
The fraction of the children that are boys is 3/8

Melody29 nov. 2013

+118730

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The container that holds the water for the football team is 1/4 full. After pouring 10 gallons of water, it is 2/3 full. How many gallons can the container hold

2/3 - 1/4 = 5/12

So 5/12 of the container is 10 gallons

One method
1/12 of the container is 10/5 gallons
12/12 of the container is (10/5)*12 = 24 gallons

another method
Let the total be X gallons
5/12 * X = 10
Mult both sides by 12 and divide both sides by 5 and you get
X = 10*12/5 = 24 gallons

Melody29 nov. 2013