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

+118725

0

rayray09876:
Two Angles that add up to 90 degrees?

They are called complementary angles.

eg
1 degree and 89 degrees

MelodyMar 25, 2014

+118725

0

Ari:
:D What is 1/4 off of 28

1/4 of 28 is 28 divided by 4 = 7

or
1/4*28=7 which you can do on your calculator (of is multiply which is * when used on most computer sites)

On the other hand you actually asked for 1/4 off 28

which could mean
28-(1/4)= 27 and 3/4
0r
28 - (1/4 of 28) = 28-7 = 21

Sometimes it is very important to use (and spell) the words correctly

MelodyMar 25, 2014

+118725

+9

Hi,
That was the quietest day that I can remember!
There were a couple of good answers provided by Alan. Thank you.
Bertie responded to reinout-g's puzzle. So now reinout has two answers to check.
Reinout signed up to Sporcle (A game site that I suggested) I am very pleased about that.
Nobody Special, who has been here for a very long time, finally became an official member. I am really pleased about that. Thanks Special.
It is now Monday or Sunday evening everywhere in the world so I am expecting tomorrow to be much busier.
That's it from me.
Melody.

MelodyMar 24, 2014

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[quote="Anonymous555"]The equation y = 15x + 500 represents the amount y that Lin earns by working for x hours, plus a performance bonus. What is Lin's hourly rate?

To find Lins performance bonus put in x=0.
That is how much she gets for working no hours.
Now work out how much she will get if she woks 1 hour.
The difference between them will be the hourly rate.
Can you find a short cut to do this.?

MelodyMar 24, 2014

+118725

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Nobody Special:
I have a confession. I posted a question a few days ago. It went almost the entire day without being answered, so I posed as a hater and essentially"cyberbullied" myself. Afterwards, I felt bad about lying, so I decided to publically apologize. I am sorry for my deceit, it will not happen again. And I'm sorry for boring you with my apology. Please carry on with your day... ^_^

It is no big deal. Don't be upset about it. I am sorry that I didn't notice your question earlier. I actually don't know what you are talking about so I don't think you did a very obvious job of bullying yourself.

I am glad that you have joined up although you could have dropped the nobody part. I've always thought that you are very special.

Welcome to the forum. I know that you have been here forever but now it is official.

MelodyMar 24, 2014

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gearteen:
:shock: how do you i find the exact value of the six trigonometric functions of theta with two give numbers

I don't know what you mean. Can you give an example?

MelodyMar 24, 2014

+118725

0

Balamurugan:
10^X=2912.35/10power X = 2912.35 then X= ?

X = ?

10 ^x = 2912.35 / 10 ^x = 2912.35 Find X

There are too many equal signs. Can you clarify your question please?

MelodyMar 23, 2014

+118725

+9

Hi all,
There weren't many questions today, it was Saturday/Sunday after all but there were still lots of great answers provided by CPhill, Radamus, Kitty<3, Alan, Millie, Rom, Reinout-g, Dms and Peter. Thanks folks!

Every day there seems to be one or two more people offering solutions. I think that this is great! It has always been my philosophy that everyone should be encouraged to join in. If you are not sure if your answer is correct you should say so BUT I think that the person who asks the question needs to accept some responsibiliy for deciding whether to accept or reject another person's offered solution. Also, almost all answers, especially lower level ones are checked by other more senior mathematicians so very few wrong answers will escape detection. If you are not happy with the answer you are given you can always 'bump' your own question and ask for someone else to take a look at it, but it may be to your advantage to wait a little while first.

Nobody Special has attempted one of reinout's puzzles. I am really pleased, I wish more people would show interest in the puzzles. Reinout is not always around so you may have to wait a little while for him to comment on your answer.

Today Reinout 'proved' that 1=2. He was illustrating what can happen when you accidentally divide by 0. I thought it was great!
This was the thread. http://web2.0calc.com/questions/i-need-help-with-this-ecvation

Information for new people - Private Messages.
There is a private message system here. If you left click on your username you will find it. If you go into the user control panel then Board Preferences, you can get a pop-up display for new messages, that is if you wish to do so.
If you send a message it will sit in your outbox until the recipient opens it. In the mean time you can edit it or delete it if you wish. It only moves to sent mail after the recipient opens it. If you delete the message the recipient will still get a message but it will just say 'message deleted before delivery' It is a really cool system. I wish my usual email worked this way.

That is it for today.
Enjoy what is left of your weekend.
Melody.

MelodyMar 23, 2014

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MelodyMar 23, 2014