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

-3

873

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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

+5

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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

+118730

0

Replace y in the first equations with (2x+12) and then solve for x

then substitute your x value into either original equation to get y.

Melody25 oct. 2013

+118730

0

(-5)+(-6)

= -5+-6

If 2 signs (+ or -) are so close together that you can put a circle around them with nothing else in the circe, the

if the signs are the same, replace them with a plus

if the signs are different, replace them with a minus.

Your question has a +- they are different so replace with a -

=-5-6

Now, start at -5 on a number line and go 6 places in a negative direction.

= -11

Melody25 oct. 2013

+118730

0

3.2million * 1.02^100

Melody25 oct. 2013

+118730

0

If I understand your question properly, which I may not, then

It is 64 degrees because they are alternate angles on parallel lines.

Melody25 oct. 2013

+118730

0

If f(t)=5/t

[ f(t)-f(a)] / (t-a)

= [5/t - 5/a] / (t-a)

=(5a-5t)/(at) * 1/(t-a)

=-5(-a+t)/(at) * 1/(t-a)

=-5/(at)

Melody25 oct. 2013

+118730

0

It depends what you are talking about

The inverse of 6 is 1/6

but if
tan(theta) = 0.35
Inverse tan 0.35 = theta

Melody25 oct. 2013

+118730

0

sqrt3(24^3) = (sqr3) * 24*24*24

You can't simplify sqr of 3 because it is already as simple as it can be.
24*24*24 you can do by long multiplication.

Melody25 oct. 2013

+118730

0

10 rabbits at first then five years later 340 rabbits.
give a formula for the population of the colony of rabbits as a function of the time

a=10, r = rate of yearly increase, R = number of rabbits after n years.

340=10*r ⁵
34=r ⁵
r = 34^(1/5)
r = 35^0.2

R _n = 10 * [34^0.2] ⁿ

R _n = 10 * 34 ^(0.2n)

This is based on the premise that rabbits increase in number yearly as a geometric progression, which, of couse, they do not.

Melody25 oct. 2013

+118730

0

Hi IQ
I get six, how did you get 9?
8*7=56
7*6=42
6*5=30
5*4=20
4*3
3*2=6

Melody24 oct. 2013

+118730

0

Weren't you going to enter some scores?

Melody24 oct. 2013