Melody

921 Questions
34315 Answers

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Mathigon website

I just discovered a site called mathigon

https://mathigon.org/dashboard
read more ..

Melody Apr 2, 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. read more ..

Melody Mar 16, 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 read more ..

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Melody Mar 15, 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

off-topic

Melody Mar 13, 2022

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WELCOME BACK CPHILL !

Melody Feb 11, 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. read more ..

Melody Feb 1, 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 read more ..

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Melody Jan 9, 2022

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HAPPY BIRTHDAY CHRIS!

Melody Dec 20, 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 read more ..

off-topic

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Melody Nov 4, 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

off-topic

Melody Oct 29, 2021

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expand the bracket and simlify the left side first

MelodyOct 17, 2013

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What is your problem?

MelodyOct 17, 2013

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The cube root of 20000 is 27 and a bit.
So if you look at all th numbers from 1cubed to 27cubed and choose the ones that are also squared.
It wouldn't take all that long to do so long as you have a calculator.

MelodyOct 17, 2013

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Yes it is the same but your answer is not fully factorised.

(6x-2)(6x-2)= 2(3x-1) * 2(3x-1) = 4(3x-1) ²

MelodyOct 17, 2013

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for two consecutive integers, the sum of the smaller and twice the larger is 29. Find the smaller integer.

Let the numbers be x-1 and x

x-1 +2*(x) = 29

x - 1 + 2x = 29

3x - 1 = 29

3x = 30

x=10

The numbers are 9 and 10
The little one is 9

You could have let the numbers be x and x+1 if you wanted. the answer would be the same.

MelodyOct 17, 2013

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Change 2/5 to 4/10, does that help?

MelodyOct 17, 2013

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MelodyOct 17, 2013

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There is no questin here.

MelodyOct 17, 2013

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what is 4x^2+0x+25

0 lots of anything is nothing

so the answer is 4x^2+25

MelodyOct 17, 2013

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What is 6 power of 6/ 6 power of negative 5 times 2???

do you mean

[ 6 ⁶ / 6 ^-5 ] * 2

It is 6 ^6--5 *2

= 6 ¹¹ * 2

= 2 * 6 ¹¹

= you can finish it.

MelodyOct 17, 2013