Melody

921 Questions
34316 Answers

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Mathigon website

I just discovered a site called mathigon

https://mathigon.org/dashboard
lire plus ..

Melody 2 avr. 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. lire plus ..

Melody 16 mars 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 lire plus ..

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Melody 15 mars 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

Hors sujet

Melody 13 mars 2022

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WELCOME BACK CPHILL !

Melody 11 févr. 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. lire plus ..

Melody 1 févr. 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 lire plus ..

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Melody 9 janv. 2022

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HAPPY BIRTHDAY CHRIS!

Melody 20 déc. 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 lire plus ..

Hors sujet

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Melody 4 nov. 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

Hors sujet

Melody 29 oct. 2021

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-15x^4 / 3x^9

There are no negative exponents in the question. An exponent is a power.

= (-15/3) * ( x ⁴/x ⁹)

= -5 * (1/x ⁵)

= -5 / x ⁵

OR

= (-15/3) * ( x ⁴/x ⁹)

= -5 * x ^-5

= -5 * (1/x ⁵)

= -5 / x ⁵

Melody25 oct. 2013

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I think this is Albanian, this is the Google translation
"Verify that the congruent triangles, congruent angles pergjysmoret the segments are congruent."
I am sorry Eliza but this does not appear to be a whole question. Some of it is missing.
Also, "pergjysmoret" did not translate at all. It means nothing in English. Sorry.

Unë mendoj se ky është shqipja, kjo është përkthim Google
"Verifikoni se trekëndëshat në harmoni, kënde harmoni pergjysmoret segmentet janë në harmoni."
Unë jam i keq Eliza, por kjo nuk duket të jetë një pyetje e tërë. Disa e saj është zhdukur.
Gjithashtu, "pergjysmoret" nuk përkthehet fare. Kjo do të thotë asgjë në gjuhën angleze. Më vjen keq.

Melody25 oct. 2013

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Your question does not make sense.

Melody25 oct. 2013

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Negative 4 over 3 divided by negative 1

-4/3 divided by -1
a negative divided by a negative is positive
and
anything divided by 1 stays the same
so
=4/3
= 1 and a third

Melody25 oct. 2013

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What is the ratio 78/83 simplify to?

83 is a prime number so this cannot be simplified.
Also
If you a fraction into your calc and then press = your calculator will simplify it for you.

Melody25 oct. 2013

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They are fractions that have the same values but different numbers like

1/2 and 2/4 and 5/10

Melody25 oct. 2013

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by looking at the graph or by using calculus.

first derivative = 0
second derivative >0 for minima
second derivative <0 for maxima
If second derivative =0 you have to think some more.

Melody25 oct. 2013

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My interpretation

You have started with a right angles isosceles triangle with an hypotenuse of 12foot

Now you want to extend the 'hypotenuse' by 10 feet so it no longer will be a right angled triangle.

Now the answer will depend on whether you are extending from just one end or a some from both ends.

Melody25 oct. 2013

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Multiply both sides by 3

and

How did you enter the divide by sign?

Melody25 oct. 2013

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I'll show you with an example

5.3*10 ¹² * 6.9*10 ^-7

= 5.3*6.9*10 ¹² *10 ^-7

= 36.57 * 10 ^(12+-7)

= 3.657 * 10 ¹* 10 ⁵

= 3.657 * 10 ⁶

OR, you could just do it on your calcuator.

Melody25 oct. 2013