19943 - | | |   20744 -  Reply from Princewill72 (Cameroon) - 2020-12-30
| | Hello, I am a mathematics teacher, I teach mathematics to high school student, I can help you in any area of mathematics being pure math, mechanics or statistics, I can help you in topics like quadratic equation, indices and logarthms, polynomials, partial fraction, trigonometry, limit and differentiation, integration and it application, differential equation, sequence and series, permutation, combination, and binomial expansion, coordinate geometry, complex number, vectors, function, conics, just to name a few topic. So if you need my help don't hesitate to contact me and I will be so happy to help become a good mathematician. |
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19943 - | | | 19960 - Reply from Julia44 (Russia) - 2017-05-30
| | Hi, I can help, write me to j.grebeneva@gmail.com |
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Hello!I am Charlotte from Hong Kong. I'm grade 5 now and I like studying Language,History and Mathematics,especially Mathematics.
Nice to meet you! |
19884 - | | | 20164 - Reply from Isaiah111 , 15 yrs (U.S.A.) - 2018-01-25
| | if you want to learn math, I'll help you in any way since i'm pritty smart at it |
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I am really interested in mathematics. And I hope I can find some friends who like math! Especially, who likes math contest! |
19842 - | | | 20299 -  Reply from Ayden107 , 10 yrs (North America) - 2018-09-28
| | Hi, I love math maybe I could be your friend :) |
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19842 - | | | 19994 - Reply from Laura160 (France) - 2017-07-06
| | Hey, I also love Maths, and I've done two maths contests! |
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Im good at some things in math! |
 La géographie,l'histoire,les maths,...ect
J'aime vraiment ça!!! |
 Hi! My name is Maggie, 14 years old from the US! I lOVE science, math, and history :) I'm a atheist, and I love logic! I like clean energy! My hobbies are listening to music, playn' with my dogs, reading, and watching scientific documentaries! I don't mind your age or where you're from! 😄✨💕 |
19803 - | | | 20286 - Reply from Zhang he43 , 15 yrs (China) - 2018-09-09
| | Hello,Maggie.I am the same age as you.I like biology very much.Nice to meet you! |
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19803 - | | | 19885 - Reply from Charlotte244 (Hong Kong) - 2017-03-16
| Hi Maggie,
I have the same hobbies as you.Plus,I like reading fictions,biographies and history books. Nice to meet you! |
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19803 - | | | 19832 - Reply from Makenzie87 (USA) - 2017-02-14
| | ME AND YOU have the same hobbies! I love school. I wanna be A MATH teacher when i get older! |
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19803 - | | | 19808 - Reply from Justin229 (Canada) - 2017-01-17
| | Maggie, what do you think of Pope Francis and Pope John Paul II? |
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Dans un repère orthogonal (o,i,j) , placer le point A de coordonnées (2;-1)
1) Soit le vecteur u de coordonnées (-4;-2) Construire les points B et C tels que : AB = u
et CA=u
2) Calculer les coordonnées des points B et C
3° Que peut-on dire du points A? Justifier
4) Placer les points d (4;3) et E(8;1)
Calculer les coordonnées des vecteurs BD et AE que peut-on en déduire? |
 Anyone who could help me with derivatives? I'll write a test in a few days and I don't understand anything :-( |
19741 - | | | 19802 - Reply from karan15 , 17 yrs (india) - 2017-01-12
| | may i help you. |
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19741 - | | | 19757 - Reply from Alix192 , 18 yrs (France) - 2016-11-20
| | another one |
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19741 - | | | 19750 - Reply from Leah83 (US) - 2016-11-15
| | here someone |
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What math are you studying in 7th grade? |
I want to find anyone who love maths to make friends!!!
These days I'm studying quadratic equation with one unknown.
XD I kidding that I like maths but it doesn't like me,I often get low marks in maths exams...
Can you offer me some suggestions?
Thanks a lot! |
19720 - | | | 19762 - Reply from Vikas167 , 16 yrs (INDIA) - 2016-11-23
| | Very Easy math But you do it More then paractice |
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I would like to help other people to learn English, but you would need to speak French.I have very good grades, and am happy to help in any other subjects, as well. |
19628 - | | | 19703 - Reply from Eva223 (USA) - 2016-09-24
| | It's very kind of you. |
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I am in need of someone to help me with ratio and probability in maths? Please message mee:))) |
19558 - | | | 19624 - Reply from Hannah-lee27 (Jamaica) - 2016-07-19
|  Algebra, Consumer Arithmetics,Computations and Numbers, Geometry and Trigonometry, Measurements, Statistics and a whole lot more |
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19558 - | | | 19561 - Reply from Justine 177 , 17 yrs (Belgium) - 2016-05-21
| Conics (equation of ellipses, circles,...)
Logarithm
Probability
...
What about you? |
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bonjour comment calculer des angles pour acb et pour cab en sachant que b = 66° et que sur le segment d 145° merci pour votre aide |
Hiya. In Iowa right now, we are doing testing in school. I was wondering if someone could help me with my algebra? Also, in the spring my excel class is taking the ACT, and I would love if someone could help me study:) |
19454 - | | | 20676 - Reply from Andrew163 , 33 yrs (UK) - 2020-08-08
| | Can you provide more info about your algebra troubles? Many who can help you, but please, add more detailed info |
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19454 - | | | 20246 - Reply from Anthony90 (usa) - 2018-06-24
| Hello, please contact me through my email anthonystevens481@gmail.com
I can help in your studies including mathematics. |
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19454 - | | | 19548 - Reply from Sandy232 (India) - 2016-05-07
| Hi Kayla!
I can help you with your algebra and your studies |
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I need help on surface area of a prism.I just need to know what the base is in this equation.
Surface Area=Perimeter times Height plus two times base.
I just dont know what the base is. |
My son has a homework assignment to compare one grain of rice and one slippery fish. Anyone have any idea where I can find one slippery fish story? |
19392 - | | | 19411 - Reply from Lilian207 (UK) - 2015-12-20
| Hi Mike,
I can help with the "one slippery fish" story. Cheers! |
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I like to get help from mathematical teachers in srilanka or other country. Please send me a reply if you can help me. I got 93 marks for last examination. |
19383 - | | | 20768 - Reply from Oneli134 , 13 yrs (Sri lanka) - 2021-01-27
|  Hi Upeshi. Would you like to be my math study partner and friend. |
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19383 - | | | 19718 - Reply from Juma145 , 26 yrs (Kenya) - 2016-09-29
| | I can help u in Mathematics. |
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hey,pour demain j'ai un exo de math voici le probleme:
une fabrique de papier vend de la pate a papier le cout de production de q tonnes de pate a papier est donner en milier d'europar:
C(q)=0,02q (au carré)+0,1q+9 |
I sometimes like to study advance maths even though I'm only 8. I mean the logaritihms, sine,cosine, tangent, quadratic graphs and formulas (also quadratic formulas). This is what you will get tested in secondary school(middle school that means). But I might be still learning the ropes. |
19373 - | | | 20127 - Reply from robin18 , 40 yrs (Canada) - 2017-11-29
| | Yes, for this there are so many online tutoring sites those can help students to their study. Like tutor.com, homeworkminutes.com, udemy.com. You can visit them. |
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19373 - | | | 19375 - Reply from Oscar Wong18 , 8 yrs (Hong Kong) - 2015-11-21
| | I just want to have some help on hexadecimal and mostly duodecimal. I always wonder about figuring out 89 digits of pi(3.1415926535897932846264338...). And to the computer science stuff also about maths, binary code which is some other stuff. I'm not even good at Kakuro so don't give me some 600th prime number. But I'm okay at adding/subtracted negative or positive integers and know how to do vectors. |
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Hey there guys! Today, I'm going to show all of you how to easily solve any quadratic equation! Yes, thats right!
First, you need to know how to get a quadratic problem. Look at this one:
X² + 3X + 5 = 0
This is a quadratic problem. Now lets say you have this problem:
X² + 3X = 5
Uh oh! This isn't a quadratic anymore! Do not worry. We can easily make it a quadratic, by doing this:
X² + 3X + ¯5 = 5 + ¯5
Then it turns into:
X² + 3X + 5 = 0
What we did was we had to get a 0 on the right side of the problem. To do so, we had to add 5's opposite which is ¯5. 5 plus ¯5 is 0. But what we do on one side, we must do on the other. So if we add ¯5 on one side, we must add ¯5 on the other side! Then we just work it out. You might be wondering why it came out like "X² + 3X + ¯5 = 0" instead of "X² + ¯2X = 0".
The reason is because of the Hippopotamus rule. You can only add "like things" together. Only X²'s can be added to X²'s. X's can only be added to X's, and numbers can only be added to numbers.
Try and make these quadratics:
X² + 2X = 6
X² - 10X = 12
X² + 4X = 8
Good, now that you know how to convert, lets move on!
Here is our Quadratic Formula:
X = ¯B ± √B² - 4 • A • C / 2 • A
Don't be afraid! It is very easy if you look at it hard enough. Lets look at a quadratic:
X² + 3X + ¯5 = 0
I'm going to give each number(X², 3X and ¯5) a name tag. The name tags will be A, B and C. The first number(X²) will be A, the second(3X) is B and the third(¯5) is C. We can now add these to our Quadratic Formula. Lets look at the first part of the Formula:
X = ¯B ±
This is where we put our B name tag, so instead of writing "X = ¯B ±" we will write just the number, which is now "X = ¯3 ±" See? Lets do the next part:
√B² - 4
Instead of writing that, we will write "√3² - 4"
So this is what we have so far:
X = ¯3 ± √ 3² - 4
Your doing great! Lets continue...
Next, we have A • C
So instead of writing that, we will write "1 • ¯5"
Why did we put 1 instead of X²? Because you ONLY put the numbers. If there is no number by X², then we just put a 1. In fact, X² can also be read as 1X².
Anyway, time for our last part!
Here we have / 2 • A
So we will write "/ 2 • 1
Lets look at our Formula again:
X = ¯B ± √ B² - 4 • A • C / 2 • A
So instead of that, we will write:
X = ¯3 ± √ 3² - 4 • 1 • ¯5 / 2 • 1
Now lets solve it!
Lets not worry about the X = ¯3 ± √ part yet. So we have now "3² - 4 • 1 • ¯5"
3² is just like saying "3 • 3", which is 9. So now its:
9 - 4 • 1 • ¯5
In math, we always multiply and divide first. 4 • 1 is 4, and then 4 • ¯5 is ¯20. If you multiply a positive number with a negative, it will be a negative, always. Negative times a negative will be a positive.
Anyway, now we have 9 - ¯20, which is 29. If this confuses you, think of negative numbers as subtracting. If you have 5 - 2, the answer is 3. But you can change the 5 - 2 to 5 + ¯ 2, which is still 3. You can change a subtraction problem by instead, adding its opposite. So 9 - ¯20 can be 9 + 20, which is 29.
Lets look at our problem so far:
X = -3 ± √ 29 / 2 • 1
√ means "The square root of"
Here are some examples:
√4 is 2 (2 • 2)
√9 is 3 (3 • 3)
√12 is 4 (4 • 4)
It is a number when multiplied by it's self.
√25 is 5 (5 • 5)
So the square root of 29 is around 5.4(We will round it to 5.4). So now we have:
X = ¯3 ± 5.4 / 2 • 1
Lets multiply the last part, making the problem:
X = ¯3 ± 5.4 / 2
The / 2 makes it a fraction by the way. All of this is over 2, like ½...
So ¯3 ± 5.4
The ± means "plus or minus" You can either add the problem, or subtract it. We have to do both. Lets first add.
¯3 + 5.4 is 2.4, so we now have:
X = 2.4 / 2
Now lets subtract!
¯3 - 5.4 is just like saying ¯3 + ¯5.4, which is 8.4. If you add two negative numbers, its the same as adding them.
So lets look at our two answers!
X = 2.4 / 2
X = ¯8.4 / 2
Congratulations! You just solved your first quadratic! If you need help with any Algebra, just ask, I'll be happy to help! |
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19337 - | | | 19374 - Reply from Oscar Wong18 , 8 yrs (Hong Kong) - 2015-11-21
| | Wow! Sounds like you are an expert at quadratic expressions and factorizing them and also including the formula.Then do you know trigonometry and In or maybe even Earl's number formula |
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Hi , I love so much mathematics and I have a good level in it ,
I can do geometry , arithmetics , algebra ... and other ..
so if you like maths , we can be good friends :) |
19232 - | | | 19313 - Reply from Richie167 , 16 yrs (Nigeria) - 2015-10-05
| | I love maths as well, i need friends especially a far who can motivate me. |
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19232 - | | | 19257 - Reply from Annabel129 (United Kingdom) - 2015-09-03
| | I love maths too!!! Maths is the best. |
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Hey,I'm Rodela and I'm from Bangladesh.I love the math most among all the subjects.Then I love the physics most.I believe that mathematics is the solution of all the problems.So if you need any help for maths or physics ,you can contact me without any hesitation.I always tell that everyone is not good at every subjects.For examaple I am very raw(too much raw!) at drawing.So you can mail me for your problems or you can mail me just for making friendship. |
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bonjour voici mon probleme:
pour demain j'ai ce probleme a resoudre pouvais vous m'aider, alors :
En 2005, d'apres l'organsation mondiale de la sante, six maladies ont causé 90% des morts par infection : le sida , les maladies respiratoires aigues , les maladies intestinales , la tuberculose , le paludisme et la rougeole.
Le sida a cause 1/4 de cet mores. La tuberculose est responsable de 1/6 de cet morts. 1/12 des morts est du au paludisme et 1/24 des morts est du a la rougeole.
Est il correct de dire qu'en 2005, le sida a tué autant de personnes que la tuberculose , le paludisme et la rougeole reunis ? (justifier votre reponce) |
17708 - | | | 17709 - Reply from Nicolas51 (France) - 2015-05-13
| il faut vérifier si 1/6 + 1/12 + 1/24 est bien égal à 1/4... ou pas !
Donc, à toi de calculer :
1/6 + 1/12 + 1/24 =
1x4/6x4 + 1x2/12x2 + 1/24 =
4/24 + 2/24 + 1/24 =
(je te laisse finir) |
|
33p286 math declic seconde AIDEZ MOI SVP!!!!!! |
Salut, j'ai un DM sur l'exerice 101p3015 du livre Maths Délic 2 Seconde! Vous pouvez m'aidez, c'est urgent! |
Bonjour quelqu'un pourrait m'aide pour un exercice il s' agit de l'exercice 67page55 du livre math déclic 2 de 2014 |
Length: 12 inches (in.) = 1 foot
3 feet (ft.) = 1 yard
1760 yards (yd.) = 1 mile
5280 feet = 1 mile
Weight: 16 ounce (oz.) = 1 pound (lb.)
Volume: 8 fluid ounces (fl oz.) = 1 cup
2 cups (c) = 1 pint
2 pints (pt.) = 1 quart
4 quarts (qt.) = 1 gallon (gal)
2 quarts = 1 half gallon |
I can help anyone. I can only do up to 3-digit-adding & subtracting, though. I also do Multiplacation. |
bonjour je fais une formation par correspondance et j ai un exercice qui me ralentis je cherche une aide. |
Hej,
I am a theoretical physics master student who is experienced in teaching maths and physics. If anyone needs help or just wants to discuss it, please let me know :) |
17529 - | | | 17531 - Reply from kosskam145 (Bénin) - 2014-12-18
| | hello. i am an electrical engineer in Bénin. i would love to discuss with you. you can e-mail me. Thanks. |
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Salut à tous, pour vos questions de maths vous pouvez m'écrire et envoyé dans ma boîte émail, je pourrai vous aider . merci. |
Bonjour tout le monde alors voici mon problème dans mon livre Math déclic 2014 pour seconde j'ai un problème sur un exercice : pour ce qui ont le livre c est page 24 n34 pour ceux qui ne l'ont pas voici l énoncé :Dans une station service le volume minimum d essence qu'un client peut acheter est de 5 L et le volume maximum est de 100 L . Le prix du litre d essence est de 1,48€ . Définir une fonction qui permet de calculer le prix payé(en euros)par un client en fonction du volume ( en litres ) d essence qu'il souhaite acheter. Merci a ceux qui répondront . Il me faudrait une réponse dans la soirée car c est pour demain le DM |
17501 - | | | 17515 - Reply from kosskam145 (Bénin) - 2014-12-10
| | Bonjour Émile, dis moi est ce que tu a pu trouver la solution à ton problème, sinon je peux t'aider. |
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Bonjour à tous merci de vouloir bien m'aide
J'ai un exercice en maths a faire pour demain .
C'est l'exercice 62 page 236 livre de seconde merci . |
J aurai besoin d'aide car j ai un dm de maths sur les statistiques p158 act 2&3 dans le manuel maths declic 2de 2014 pourriez vous me donner les réponses ? |
Si vous avez le livre de mathematiques declic des secondes , pourriez vous m'aider svp?
ex 35 page 30
Pour ceux qui ne l'on pas :
Une boite sans couvercle de dimensions L et l (Longueur , largeur) a un perimetre de 50 cm.
1.Quelle relation peut on ecrire entre L et l ?
2.Peut on avoir L=30 cm?
Dans quel intervalle se trouve obligatoirement L et l ?
3.Exprimer L en fonction de l et l en fonction de L
4.Le rectangle peut il etre carre ? Qu'elles sont alors ses dimensions ? |
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17461 - | | | 17463 - Reply from Nicolas51 (France) - 2014-10-31
| 1- périmètre = mesure de l'ensemble L + L + l + l = 50 cm
Donc 2L + 2l=50
2- si un côté fait 30 cm, tu penses bien que le tour complet ferait + de 60 cm.
2x30 + 2l = 50 cm
60 + 2l = 50 cm
donc 2l = -10 cm ce qui est impossible (largeur négative)
il faut que l et L soient >0 et < 25
intervalle = ]0 ; 25[
3- 2L = 50-2l
donc L = (50-2l)/2
L = 50/2 - 2l/2
L = 25 - l
et idem pour l'autre : 2l = 50-2L (etc...)
4-évidemment
si L=l alors on peut écrire 4L=50 donc L=12,5 |
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Quelqu'un pourrait m'aider? Je bloque vraiment. Merci d'avance!
#ex n°34 p.30. |
HI ,I HAVAE PROMBLEMS WITH MATH EVERYTHING WE DO IN MATH ITS JUST SO HARD AND I WAS
WONDERING HIW DO YALL LEARN STUFF VERY HARD LIKE WILL YOU WANT HELP ME
THX.LOVE MADISON |
17416 - | | | 19342 - Reply from Jarvis44 , 17 yrs (America(USA)) - 2015-10-20
|  Hi there. What are you having problems with? |
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Salut quelqu'un aurais les réponses de l'exo 63 page 39 ?? |
What is a prime number
A number is greater than 1 is called a prime number, if it has only two factors, namely 1 and the number itself.
Prime numbers up to 100 are:2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97
Procedure to find out the prime number
Suppose A is given number.
Step 1: Find a whole number nearly greater than the square root of A. K > square root(A)
Step 2: Test whether A is divisible by any prime number less than K. If yes A is not a prime number. If not, A is prime number.
Example:
Find out whether 337 is a prime number or not?
Step 1: 19 > square root (337)
Prime numbers less than 19 are 2, 3, 5, 7, 11, 13, 17
Step 2: 337 is not divisible by any of them
Therefore 337 is a prime number
These are simple and easy tricks which are helpful to solve your math homework problems . |
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Today I want to share what Is BODMAS Rule & How to use it?
BODMAS rule decides the order of operations for add, subtract, multiply, divide, etc as below shown
B-Brackets (do all operations contained in the brackets first)
O-Orders (powers and square roots etc)
D-Division
M-Multiplication
A-Addition
S- Subtraction |
17351 - | | | 17376 - Reply from ashanti237 , 11 yrs (United States) - 2014-09-13
| | i can help you with that |
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An arithmetic progression (AP) or arithmetic sequence is a sequence of numbers such that the difference between the consecutive terms is constant.
Example: 2,4,6,8,10…..
Arithmetic Series : The sum of the numbers in a finite arithmetic progression is called as Arithmetic series.
Example: 2+4+6+8+10…..
nth term in the finite arithmetic series
Suppose Arithmetic Series a1+a2+a3+…..an
Then nth term an=a1+(n-1)d
Where
a1- First number of the series
an- Nth Term of the series
n- Total number of terms in the series
d- Difference between two successive numbers
Sum of the total numbers of the arithmetic series
Sn=n/2*(2*a1+(n-1)*d)
Where
Sn – Sum of the total numbers of the series
a1- First number of the series
n- Total number of terms in the series
d- Difference between two successive numbers
Example:
Find n and sum of the numbers in the following series 3 + 6 + 9 + 12 + x?
Here a1=3, d=6-3=3, n=5
x= a1+(n-1)d = 3+(5-1)3 = 15
Sn=n/2*(2a1+(n-1)*d)
Sn=5/2*(2*3+(5-1)3)=5/2*18 = 45
I hope the above formulae are helpful to solve your math problems
Thanks |
|
To calculate the day of the week for a given date, first of all we need to find out the number of odd days.
Today I thought of sharing a beautiful problem I learned in my school, though it is easy, it is tricky too.
Odd Days are number of days more than the complete number of weeks in given period.
Leap Year is the year which is divisible by 4.
A normal year has 365 days
A leap year has 366 days
One normal year = 365 days = 52weeks + 1day
One normal year has one odd day
One leap year = 366 days = 52weeks + 2days
One leap year has two odd days
100 years = 76 ordinary years + 24 leap years = 5200 weeks + 124 days = 5217 weeks + 5 days
100 years have 5 odd days
400 years have (20+1) 0 odd days
The number of odd days and the corresponding day of the week is given below
0-Sunday
1-Monday
2-Tuesday
3-Wednesday
4-Thursday
5-Friday
6-Saturday
So by finding out the number of odd days you can find out the day of the week. I hope this procedure Will be helpful in solving math problems in exams.
Thanks. |
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hello i come from China.my school will have a big test next week. but i am poor at math.i am very sad. can you help me. thanks |
17283 - | | | 17483 - Reply from Samuel174 (Spain) - 2014-11-19
| Hey,
I am developing magako, a software that teaches maths to teenagers, you can check it out here: www.magako.com
I hope it can help you, you can contact me by email sam at magako dot com if you would like to see some topics added. |
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JE VEUX UN PEU D'EXPLICATION SUR LE DEFINITION SERIE STATISTIQUE JE PORTE SUR VOUS MES AMIS |
Hey I'm 16 and I need help with maths |
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