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Melody
Nombre de usuario
Melody
Puntuación
90158
Stats
Preguntas
830
Respuestas
24269
848 Questions
24730 Answers
+2
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LaTex Coding
LaTex is a mathematics presentation language that can be used on this forum.
It is used in many other places as well.
This can be very confusing when you first use it but if you start with little things like using it to write
lee mas ..
Melody
11 hours ago
0
57
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+90158
How to upload a picture
Please use this hyperlink to see instructions.
https://web2.0calc.com/questions/instructions-on-uploading-pictures#r4
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Melody
16-sep-2017
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+90158
Have you had login problems - please comment
I have just been informed that a member is having problems signing in lately.
I'd like to know if anyone else has had any problems?
Could you please comment - especially if you to have had problems.
lee mas ..
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Melody
01-ago-2017
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+90158
Repost: I am interested too.
Helperid bought my attention back to this question.
https://web2.0calc.com/questions/very-hard-math-question-for-my-profile-picture
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Melody
24-jun-2017
+2
318
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+90158
Ein großes Willkommen bei deinen beiden neuen Moderatoren!
On behalf of everyone I would like to thank admin and congratulate Omi67 and asinus on becoming moderators for the web2.0calc German forum today.
This forum has had little moderation for some time
lee mas ..
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Melody
21-may-2017
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A big welcome to our two new moderators.
On behalf of everyone I would like to congratulate Omi67 and asinus on becoming moderators today.
They will mainly be moderating the German forum but they will be able to moderate here as well.
I thank you both
lee mas ..
Fuera tema
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Melody
20-may-2017
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507
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Some music to share :)
I enjoy listening to many different types of music from all over the world.
I would like to share what I am listening to now.
Maybe someone would like to listen to something that they might not have heard before.
It is just a song
lee mas ..
Fuera tema
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Melody
03-may-2017
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333
13
+90158
Birthdays
Anniversary - Birthday Dates
The original post can not longer be edited so I am making a new one.
Original post: https://web2.0calc.com/questions/birthdays
Some members are no longer active but I have kept most in.
lee mas ..
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Melody
25-abr-2017
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MysticalJayCat's belated birthday
Oh Dear !
We missed MysticalJayCat's birthday!
I am so sorry MJ !
I am baked you a cake :)
lee mas ..
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Melody
24-abr-2017
+5
378
3
+90158
Reference material thread and 3D graphing calc.
I have just been asked, by member DrNourian, to include this 3D graphing calculator reference
to our "Reference Material" thread which can be found in the sticky topics on the right of the page.
This is a direct
lee mas ..
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Melody
05-abr-2017
+3
693
8
+90158
@ Problems with the forum as of 25/3/17
Hi everyone,
I have seen a lot of individual complaints posted. I have also noticed that Admin has been seeing at least some of them and has been repairing the problems. Thanks Admin :)
Anyway, I thought it would
lee mas ..
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Melody
25-mar-2017
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I am not familiar with the notation for these questions.
I am not familiar with the notation for these questions.
So I am interested in the answer if someone knowledgable would like to take a look . ://
http://web2.0calc.com/questions/coordinates-question
lee mas ..
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Melody
04-mar-2017
-1
293
2
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Melody's interest posts (1/3/17)
My interest posts list is exploding so I am going to put some of them here ://
Other people can do this too if they want to.
Just make it clear what you are doing. :)
lee mas ..
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Melody
01-mar-2017
+20
1675
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@ Is PROCRASTINATION a problem for you ?
Hi everyone,
I am getting some information from a couple of different members.
HighSchoolCalculus (HSC) found this you tube clip.
It is quite humourous and thought provoking.
lee mas ..
hectictar
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Melody
25-feb-2017
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#2
+90158
0
You have to add up the 4 lengths and then divide by 4 to get the average.
Melody
29-sep-2013
#2
+90158
0
I think this question is in italian, I put it through a translator and this is what I got.
A trapezoid rectangle has the smaller base, the height and the oblique side respectively 9cm long, 4cm 5cm.sapendo cha and the projection of the oblique side on the basis mangiore is 3cm long, determine the extent of the perimeter
Unfortunately, I still don't understand the question. sorry.
Melody
29-sep-2013
#1
+90158
0
I have no idea what your question means.
Can you explain yourself better?
Melody
29-sep-2013
#1
+90158
0
With your fingers.
Melody
29-sep-2013
#1
+90158
0
You could do it on your calculator if you have a fraction button.
otherwise
27 1/4 - 12 8/9
= 27 + 1/4 - (12 + 8/9)
= 27 + 1/4 - 12 - 8/9
= 27 - 12 + 1/4 - 8/9
= 15 +1/4 - 8/9
hopefully you will recognise that 1/4 is less than a half and 8/9 is more than a half. The first one needs to be the biggest unless you want to deal with negative numbers.
So I suggest you change 15 + 1/4 into 14 + 1 + 1/4 and, 1 and a quarter is 5 quarters.
so
=14 + 5/4 - 8/9
Now, you cannot add or subtract fractions unless the denominators (bottoms) are the same. You must find a number that 4 goes into and 9 goes into. 4*9 will work and in this case it is the smallest one.
So you will have to change it to 14 + something over 36 - something else of 36
and I am going to let you finish by yourself.
Happy puzzling.
Melody
29-sep-2013
#1
+90158
0
How much does an atom of iron weigh? I guess you could google this just as easily as I could. Cheers.
Melody
29-sep-2013
#1
+90158
0
Just convert the km to metres and do the division on your calculator. The units cancel out. the answer will just be a number.
or
You could convert the metres to km and do the division. The answer will be the same.
Melody
29-sep-2013
#1
+90158
0
The probability of getting at least one heart is the compliment of getting no hearts.
What I mean is, you either get a heart or you don't so the sum of these 2 probabilities is 1.
All probabilities are between 0 and 1 (0 = can't happen) (1 = must happen)
The probability that the first chosen is not a heart is 48/52
now there are only 51 cards left and only 47 of them are not hearts so
The probability that the second chosen is not a heart is 47/51 etc
So
The probability that none are hearts is
P(no hearts) = 1 - [ 48/52 * 47/51 * 46/50 * 45/49 ]
I hope that you LEARN from my answer.
Melody
29-sep-2013
#1
+90158
+5
Firstly what is bidmas? Do you mean BODMAS ? If you mean bidmas please tell me what the i stands for?
BODMAS stands for
Brackets then
of (as in power of) then
division and multiplication equally important just work left to right then
addition and subtraction equally important just work left to right
Your first question is so easy that I am sure you can do it yourself. Just try putting the brackets in different places until it works.
The second one is a bit tricky. What i will tell you is that it is not 4 squared. There is only one place that you can put the first brackets to change this. There will be 2 sets of brackets altogether.
good luck. Happy puzzling
Melody
29-sep-2013
#1
+90158
0
Without any brackets this expression is really
=35000 * x^2 - (x / 200) * x
=35000* x^2 - x^2 / 200
=x^2 * (35000 - (1/200))
=34999.995 * x^2
Melody
29-sep-2013
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