Melody

921 Questions
34315 Answers

+1

1

1742

2

+118724

Mathigon website

I just discovered a site called mathigon

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

Melody Apr 2, 2022

-8

609

1

+118724

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

-2

8

1459

5

+118724

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 ..

●●●●●

Melody Mar 15, 2022

-3

871

3

+118724

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

-4

849

3

+118724

WELCOME BACK CPHILL !

Melody Feb 11, 2022

-5

717

2

+118724

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

-7

889

11

+118724

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 ..

●●●●●●●●●●●

Melody Jan 9, 2022

-6

1

996

3

+118724

HAPPY BIRTHDAY CHRIS!

Melody Dec 20, 2021

+5

16

5552

9

+118724

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

●●●●●●●●●

Melody Nov 4, 2021

-9

1091

1

+118724

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

+118724

0

-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

MelodyOct 25, 2013

+118724

0

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.

MelodyOct 25, 2013

+118724

0

Your question does not make sense.

MelodyOct 25, 2013

+118724

0

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

MelodyOct 25, 2013

+118724

0

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.

MelodyOct 25, 2013

+118724

0

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

1/2 and 2/4 and 5/10

MelodyOct 25, 2013

+118724

0

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.

MelodyOct 25, 2013

+118724

0

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.

MelodyOct 25, 2013

+118724

0

Multiply both sides by 3

and

How did you enter the divide by sign?

MelodyOct 25, 2013

+118724

0

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.

MelodyOct 25, 2013