Melody

921 Questions
34315 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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590

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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

-5

854

3

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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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863

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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

-10

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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

+118677

0

-4

because -4*-4*-4 = -64

also, a cube root is a power of 1/3

So, you can put (-64) ^ (1/3) into your calculator and get the answer.

Melody2 oct. 2013

+118677

0

What is a -csc function?

Melody2 oct. 2013

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0

Melody2 oct. 2013

+118677

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I've answered the question for you but keep in mind that I often make careless mistakes.

Pg1.jpg
Pg2.jpg

Melody2 oct. 2013

+118677

0

Melody1 oct. 2013

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Multiples of 10 are 10,20,30,40,50,60,..........

Multiples of 12 are 12,24,36,48,60,72,.......

Multiples of 15 are 15,30,45,60,75,90,........

now, you can tell me, what is the lowest common multiple?

Melody1 oct. 2013

+118677

0

You have m because m is the slope
so
y=-3x+b

You also know that when x=4 y=0 so you can plug these values into the equation to come up with the correct value of b

Then you just write the equation with the number values of m and b.

Melody1 oct. 2013

+118677

0

It cannot be simplified.
It is an irrational number and cannot be expressed exactly as a fraction or as a decimal.

You can use your calculator to estimate it if you wish.

Melody1 oct. 2013

+118677

0

(2x)^2(4y)^2 this is a bit ambiguous but I going to take it to be

(2x)^2 * (4y)^2 =

= 2^2 * x^2 * 4^2 * y^2

= 4 * x^2 * 16 * y^2

= 64 x^2 y^2

Melody1 oct. 2013

+118677

0

You have just one non-zero number in front of the point 5.046 (you can put the last zero if you want it doesn't make any difference).
You count the number of places that you moved the point - remembering that any whole number has an invisible point at the end. the number of places that you move the point is the power
If the number is little (less than one ) the sign of the power will by negative. If it is a big number it will be positive.
Now you should be able to do it.
If you respond with the answer I will tell you it it is correct.

Melody1 oct. 2013