Member: Melody

921 Questions
34315 Answers

1742

+118725

Mathigon website

I just discovered a site called mathigon

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

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Melody Apr 2, 2022

-8

609

+118725

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 ..

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Melody Mar 16, 2022

-2

1459

+118725

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

871

+118725

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

WELCOME BACK CPHILL !

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Melody Feb 11, 2022

-5

717

+118725

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 ..

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Melody Feb 1, 2022

-7

889

+118725

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

-6

996

+118725

HAPPY BIRTHDAY CHRIS!

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

-9

1091

+118725

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

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Melody Oct 29, 2021

+118725

kennyb:
convert bearings into azimuths

Hi Kenny,

Azimuth bearings appear to be simply a bearing from 0 degress to 360 degrees starting at north and going clockwise.

So west is just 270 degrees. etc

take a look at this web page.

http://academic.brooklyn.cuny.edu/geology/leveson/core/linksa/comp.html

MelodyMar 28, 2014

+118725

ryan:
powers of decimal

Hi Ryan,
If you are allowed to use a calculator you can just opt for pressing buttons but if you want/need to understand then
powers of decimals is just multiplying decimals

0.2 ³ = 0.2 * 0.2 * 0.2

so if you can understand multiplying decimals then you can work out powers of decimals
To that end, work through this web page and if you are lucky all will become clear.

http://www.mathsisfun.com/multiplying-decimals.html

Just high light the address, left click then choose goto.

or you can just copy and paste into the browser if you prefer.

MelodyMar 28, 2014

+118725

swag:
find the savings plan balance after 9 months with an APR of 11% and monthly payments of $300

Let's see
I presume you mean 11%per annum paid monthly. so that is 11/12 = 0.9166666% per month = 0.00916666666 (= i)
You put in $300 at the beginning of each month for 9 months. n=9
R=$300 This is your regular payment.
How much do you have at the end of 9 months.

Is this your question?
This is a future value of an ordinary annuity question.
S=R * [(1+i) ⁿ-1}/i

300*((1.0091666666)^9-1)/0.009166666666

So there will be $2801.15 in the account to the neares cent.

MelodyMar 28, 2014

+118725

I haven't checked my logic very well but I think that C1 has to be 18

Then you will probably be given another clue

but I think that B1 has to be 16 or 17

MelodyMar 27, 2014

+118725

Can you give me the link to this game please reinout?
Has it been Sporcle Verified?
-----------------------------------------------------------------------------------------
For those not in the know.
I recognise this as a game from the Sporcle site. I have been trying to get people interested in that site for ever!
http://www.sporcle.com/
There are easy games as well as hard ones. They are many different categories. Like sport ,literature science, movies in fact just about anything you can think of.
Just in the last couple of days reinout and I have challenged each other in these games
chess,
I hate sports
ia countries,
N countries
1 - 100
and I am sure others as well.

'I hate sports' was a fun one. Reinout almost always wins, but it is fun.

MelodyMar 27, 2014

#84

+118725

Hi everyone,

Great answers were provided today by Rom, Alan, Samgelinas, I like Serena, Bertie, guest, CPhill and KasiKazuto. Thank you.
Thanks were given by Princess Sophie, Jannina1514, and Pewface111. Pewface111 was so overjoyed that (s)he offered Chris (CPhill) 'diamonds and love'. That is pretty impressive.
Jennina1514 joined up today. Welcome to the forum. We hope you have many positive experiences here.

I usually refer people to a wiki formula page when I answer log questions. Today Alan showed me that these are available in the formulary section on this site. Thank you Alan, we all need to be taught and encouraged to use the features that are readily available in the web2.0calc site. This site has many great features that we, as a group, are still discovering.

Thank you to the guest who contributed the previous post on this thread. Apparently non members have been having trouble submitting new posts. They are also having problems registering.
Perhaps this is why there have been so few questions this week. There have been a few of non-member posts today, maybe the problem has been rectified. I hope so! (This time last week there would have been twice as many posts) Anyway, I will write a note to Andre Massow, the site developer to let him know of the problem. There is nothing more that I can do, I am sorry. Hopefully this problem will be rectified very soon. If anyone knows of ongoing problems could you please keep us informed so that we at least know that the problem is continuing.

If any of you have different thoughts on why the question numbers are dropping or how this problem can be overcome, please share your ideas with the rest of us. You can post on this thread if you wan,t or you can start a new thread, or you can discuss it with me by a private message.

That is it for this Wednesday/Thursday.
Melody.

P.S. I just emailed Andre Massow to notify him of the problem.

MelodyMar 27, 2014

+118725

Hi random person,

Can you give us a concrete example of the type of sequence you are refering to please.
You have a captive audience here.

MelodyMar 27, 2014

+118725

Don't forget,
It is a binomial so there will be 2 answers.

MelodyMar 27, 2014

+118725

Britt:
what is 526923076.923 in scientific notation?

Hi Britt,

You have to end up with just 1 digit in front of the decimal point so that will be 5.26923076923

So you have to 'jump' the decimal point over 8 digits to get it to its new position.

Your original number is a really big one - so the power (indice) will be positive

hence 5.26923076923 x 10 ⁸

You might like to work through this math is fun page

http://www.mathsisfun.com/numbers/scientific-notation.html

MelodyMar 27, 2014

+118725

Quote:
You have to forget the negative 7, you don't need it . You'll need it only if you are in a grafic...

The -7 can only be dismissed because Mthsmename has stated that it is a pythagorean question and a side length cannnot be negative.
If it was just a straight algebra question the -7 could not be dismissed. I know that you know this already Sam.

Interesting username you have there Mthsmename. You could sign up and make it official

MelodyMar 27, 2014

Username	Melody
Score	118725
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