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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dtrain:
.19=(27x^3(x))/(2.5-2x)^2

19(2.5-2x) ² = 27x ⁴ where 2.5-2x not equal to 0 ==.> x not equal to 1.25

19(6.25+4x ²-10x)= 27x ⁴

-27x ⁴+76x ²-190x+118.75=0

140313 complicated roots.JPG

It is interesting that two different calculators have given 2 different answers This one gives 2 answers, web2.0 calc gives only one.
Maybe i will look at another calculator and go for 2 out of 3

140313 Compicated equation2.JPG

There you go, the 2 graphing calculators agree with each other. How about that.

MelodyMar 13, 2014

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dtrain:
.19=(27x^3(x))/(2.5-2x)^2

[input]19=(27x^3(x))/(2.5-2x)^2[/input]

MelodyMar 13, 2014

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0

MultiQuestioneer:
Please explain or showcase your work so I could use this page for future reference.
Rhombus:
ABCD is a Rhombus. AB=21, m<ABE=60. Leave answers in simple radical form.

so E is the intersection of the 2 diagonals.

What is m?
and
What is it that you want to find? Is it the area?

MelodyMar 13, 2014

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0

Erica:
What number is one hundred more then 712

MelodyMar 13, 2014

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rqwr:
find the area of regular octagon with a hyportenuse of one of the triangles made out of the vertices for 2 cm

what hypotenuse?
I don't understand your question.

MelodyMar 13, 2014

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keim:
A model ship is built to a scale of 1 centimeter:5 meters.The length of the model is 30centimeters.What is the actual length of the ship?

1*30 = 30cm

5*30 = 150m

MelodyMar 13, 2014

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walkera:
:? Glenda swam the 200 yd freestyle in 100 seconds. if she maintains the same rate in the 500 yd freestyle,how long will it take her to finish the race?

100sec/200yds = x sec/500 yards

mult both sides by 500 yards and you get

100sec/200yds * 500yards

The yards cancel out

100/200 * 500secs

1/2*500 sec

250 seconds

MelodyMar 13, 2014

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0

metonite56:
I invented my own Equation!
will you guys post it?
Here it is...
X*(X/N)=N

We don't need to post it. You already have.

what you really have there is X ²=N ² Where N and therefore X are not equal to 0. (because you cannot divide by 0)
This is what it would look like if you graphed it. Except there should be an open circle around (0,0) because that point is not inclued.

140313 made up equation.JPG

MelodyMar 13, 2014

+118725

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lai:
:D 664-367 equals what

Look here (highlight and right click then choose goto)
http://www.youtube.com/watch?v=yCGgmnMT21Q

MelodyMar 13, 2014

+118725

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20Darena:
14m - 19m =

I am going to look at alternate questions

What is 14m-3m =
14 marbles - 3 marbles = 11 marbles so
14m-3m=11m

So for your question if you can work out what 14-19 is then you can just tack the m on the end.

14-14=0
so 14-19 must be less than 0.
How much less than 0? Can you work it out? Let me know what you get and I will tell you whether or not it is correct.

MelodyMar 13, 2014