Melody

921 Questions
34316 Answers

+1

1

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Mathigon website

I just discovered a site called mathigon

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

Melody Apr 2, 2022

-8

613

1

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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

-2

8

1483

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+118735

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

-3

873

3

+118735

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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850

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WELCOME BACK CPHILL !

Melody Feb 11, 2022

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721

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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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888

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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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999

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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

+118735

+5

Hi anon,

That Guy has got a really long neck LOL

You can upload Gif's like this one directly onto the forum :)

Why don't you try to do that? :D

MelodyApr 6, 2015

+118735

0

Good MG

I want you to learn it too :)

MelodyApr 6, 2015

+118735

+13

If the variance is 16 then the standard deviation is 4

49 is one standard deviation above the mean.

50% of scores are above the mean and

68%/2 = 34% are between the mean and 1 standard dev above the mean.

SO

(50-34)% = 16% of scores are above 49

MelodyApr 6, 2015

+118735

0

you made a mistake anon. Would you like to fix it with another post?

MelodyApr 6, 2015

+118735

+5

By factoring out all the squared numbers. :)

MelodyApr 6, 2015

+118735

+5

I am not sure what you want either :/

Maybe this :/

$$\\\frac{6}{7}-9 \\\\
=\frac{6}{7}-1-8 \\\\=-\frac{1}{7}-8\\\\=-8-\frac{1}{7}\\\\
=-8\frac{1}{7}$$

MelodyApr 6, 2015

+118735

+3

@@ End of Day Wrap Sun 5/4/15 Sydney, Australia Time 11:55pm ♪ ♫

Hi everyone,

It was beautifully quiet today - I wish we had more quiet days.

Still there are always some great questions and answers. Today our wonderful answerers were Alan, Geno3141, CPhill, MathGod1, Princessnauwisa and Bertie. Thanks all

Interest posts:

1) Statistics - binomial distribution Thanks Geno

2) Simultaneous equations Thanks Geno and CPhill

3) Probability of winning the jackpot Thanks CPhill

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

MelodyApr 5, 2015

+118735

+5

Mon 6/4/15

FTJ means "For the Juniors"

1) How many ways can k computers be connected to N periferals (cont) Thanks Bertie et al.

2) Alien spaceship (cont) Alan found us a great 3D graphing program that i have added to our "reference material" sticky topic

3) Manipulating logs Thanks CPhill and Melody

4) Geometry with cosine rule Thanks CPhill

5) Volumes and the power of the web2 calc Thanks CPhill and Nauseated

6) Great questions for the little kids Thanks CPhill and Melody

7) Probability (using combinations) Thanks Alan and Melody

8) How do you do compounding interest when it is not yearly? Melody

9) Combinations - vertices of an octahedron Thanks CPhill

10) Horrible big powers Thanks CPhill and Melody

11) Manipulating trig Thanks CPhill

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

MelodyApr 5, 2015

+118735

0

Welcome to the Web2 forum Princess

MelodyApr 5, 2015

+118735

+5

Hi MG

If the asker means f*45, it should always be written as 45f

The number must be written first if you are going to have an invisable multiply sign. :)

MelodyApr 5, 2015