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Terminologie mathematique 2010-10-31
Adil pose la question :
Bonjour ,

Pourriez-vous m'indiquer les titre et auteur d'un bon dictionnaire francais anglais de terminologie mathematique ? Auriez-vous egalement l'adresse d'un site web traduisant du francais a l'anglais les termes ert expressions mathematiques ?

Merci par avance,
Adil

Pierre-Louis Gagnon lui répond.
Le terme suivants 2008-03-30
jacques pose la question :
voici 2 suites. Explique la logique qui permet de passer d'un terme a l'autre dans chacune des suites et trouve le terme suivants. 1)douze,5,trente,6,neuf,4,seize,... no.2) 26,vx,18,dt,36,tx,51,...
Maxime Fortier Bourque lui répond.
Taux à déterminer 2006-11-01
Barrault pose la question :
Une certaine année,un article augmente d' un certain taux "t" au premier semestre puis d' un taux triple du premier au second semestre, sachant que l' augmenation globale sur l' année est 66.75%; uels sont les taux pour chacun des deux semestres de l' année?
Claude Tardif lui répond.
Matrice 2006-02-01
Kader pose la question :
mon probleme est le suivant soit deux matrices carrees A et B d'ordre n qui sont anticommutatives AB= -BA , demontrer que au moins une des deux matrices n'est pas inversible si n est impair. je n'arrive pas a utiliser le fait que n soit impair, trouver le rapport entre n impair et inverse des matrices, je pars sur la base de DETAB=DETA*DETB
Claude Tardif lui répond.
What are the next three terms? 2019-06-18
Shriya pose la question :
-6, -2 , 2, 6,10 what are the next three terms?
Penny Nom lui répond.
Why Mean? 2019-05-08
Jill pose la question :
A group of teachers were trying to figure out why the”mean” is called mean - do you know??
Penny Nom lui répond.
The price of a watermelon 2018-07-07
errin pose la question :
the price of the watermelon is directly proportional to its weight. If a watermelon that weighs 22 pounds cost $5.40, how much will a 17.5 pound watermelon cost?
Penny Nom lui répond.
The number of terms in an arithmetic sequence 2018-06-15
Don pose la question :
how many terms in arithmetic sequence are there if the first term and the last term are 3&59 respectively in common difference is 4?
Harley Weston lui répond.
Positive and negative values of a function 2018-01-30
Grayson pose la question :
f(x)=x^6-x^4
Interval: ( negative infinity, negative one )
Test Value: negative two
Function Value f(x): positive forty eight
Interval: ( negative one, zero )
Test Value: negative one
Function Value f(x): zero
Interval: ( zero, positive one )
Test Value: positive one
Function Value f(x): zero
Interval: ( positive one, positive infinity )
Test Value: positive two
Function Value f(x): positive forty eight

What is the sign of f(x) for each Interval?

Penny Nom lui répond.
y as an expression in terms of x 2018-01-20
Mark pose la question :
What is y as an expression in terms of x ?
pennt lui répond.
An alphabetic sequence 2017-09-17
malik pose la question :
find the letter of the following series....?

ZOTTFFSSE-

Penny Nom lui répond.
Successive Differences 2017-04-06
Twaha pose la question :
Please find the equation of the sequence 1 2 4 7 11 16 22
Penny Nom lui répond.
Two sequences 2016-08-20
Ting pose la question :
The first four terms of a sequence are 4, 20, 56 and 120. By comparing with the nth term of sequence 1,5,14 and 30 which is 1/6n(n+1)(2n+1), find a formula for nth term. Can you precisely show out how you do this questions ( with the steps please)
Penny Nom lui répond.
Which term of this sequence has value 8? 2016-07-20
Lauren pose la question :
Hi there

Which term in the sequence -2; -5/3; -4/3 ; -1; ... has a value of 8.

Since term 2 and 3 of this sequence contain fractions which can be converted to recurring decimals. What is the best way to work out the common difference here.

I do however understand that to work out the nth term of an arithmetic series, the following formula Tn = a + (n-1)d. In this series a = -2

Penny Nom lui répond.
Triakis 2016-06-27
Gordon pose la question :
Some authorities treat "triakis" (and related terms "dyakis", "tetrakis", etc.) as attached prefixes; others treat them as separate adjectives. Thus I see one of the Catalan solids described as both "triakistetrahedron" and "triakis tetrahedron". Which usage is correct?
Chris Fisher lui répond.
Sin squared (x) + Sin (x) - 2 2016-06-25
Sree pose la question :
Reduce the below to a single term

Sin squared (x) + Sin (x) - 2

Thanks

Penny Nom lui répond.
The evaluation of a 3 by 3 determinant 2016-02-19
Kristen pose la question :
What is the step-by-step process on how to evaluate the determinant of a 3*3 matrix, using the expansion method (not the diagonal method)
Penny Nom lui répond.
Which term of the series 2+7+12+...is 152? 2016-02-01
francis pose la question :
whice term of the series 2+7+12+...is 152?
Penny Nom lui répond.
A sequence 2016-01-05
Mia pose la question :
the next three terms in each sequence. 0.4, 0.54, 0.68, 0.82,
Penny Nom lui répond.
The sequence 1,2,4,7,11,16... 2015-10-15
HEMANT pose la question :
what is the next term in the sequence : 1,2,4,7,11,16,?
Penny Nom lui répond.
The nth term 2015-07-04
ujjal pose la question :
What is the nth term in the order 6,8,10....
Penny Nom lui répond.
1,4,9,61,52,___ 2015-01-21
Mubashir pose la question :
1,4,9,61,,52,___,84,___,18,1,121,___ please tell me its formula and also that rule that is being applied here like adding 3 or subtracting 5 etc.
Walter Whiteley lui répond.
A sequence 2015-01-13
cyaz pose la question :
write a rule for each sequence then find next 3 terms for 7/8, 3 1/8, 5 3/8
Penny Nom lui répond.
The degree of a polynomial 2015-01-05
Nichole pose la question :
How do I determine the degree of polynomials? I've searched this on sites but they are all so confusing! Is there a simple explanation or way to find what the degree is? Some examples are: 6x^4 10x^2yz^5 and 3m^2n^7-10m^8. I also have to say that I am under the impression that this symbol ^ means the number after it is an exponent.
Robert Dawson and Harley Weston lui répond.
Find the nth term 2014-10-26
Kenneth pose la question :
According to the pattern of the following sequence. Find it's nth term: 3,9,27,81,243,..........
Penny Nom lui répond.
Why express fractions in lowest terms? 2014-10-09
John pose la question :
I teach in a Faculty of Education. A colleague in the university asked me about fractions and lowest terms. I am quoting the person below, and would appreciate your insights into the question/thought.

"One I'm struggling with is why (for example) 6/18 is not considered as good an answer to a fraction question as 1/3. The traditional response is that 6/18 is not in lowest terms so the question has not been finished until the fraction is reduced, but what actually makes the lowest terms answer the better one? Is it convention? Is there a way to explain why simplest form answers in fractions are right and and anything else is considered incorrect without alluding to some need for this 'good habit' elsewhere in math or science? Is there a real-life reason?" Thank you for any insights and if you have nothing to offer to this query, that is fine too. I appreciate your consideration. John

Robert Dawson lui répond.
9,-4,6,-8,3,... 2014-03-31
Alynna pose la question :
You are given the following pattern: 9,-4,6,-8,3,...
Create a formula for the nth figure.

I have trouble finding the formula, I need help trying to find it.

Penny Nom lui répond.
A sequence 2014-02-10
Joshua pose la question :
hello..the question I have today is... A sequence... 1,5,14,30,55,91 find the general terms.
Penny Nom lui répond.
A sequence 2014-01-30
joshua pose la question :
hi...really struggle with one question that the teacher gave us...
The sequence is 1,2,1,5,8,1,11,___,___

Penny Nom lui répond.
Find the next 3 terms of the sequence 2013-12-19
Lanelyn pose la question :
Find the next 3 terms of the sequence 2,3,9,23,48,87,__,__,__
Robert Dawson lui répond.
Coefficients 2013-11-27
kim pose la question :
in the expression below, what number is the coefficient of y? y2+3y+4
Penny Nom lui répond.
4 linear equations with 3 unknowns 2013-04-12
Marian pose la question :
how to solve for 3 unknowns in 4 simultaneous equations
Penny Nom lui répond.
Write a rule for the sequence 2013-02-20
Angelia pose la question :
Write a rule for the sequence. Then, find the unknown term. 1 3/8, 1 ¾, 2 1/8, _______, 2 7/8 Think: The pattern is increasing. Add 1/6 to find the next term. Rule: _______________
Penny Nom lui répond.
The nth term of a sequence 2012-10-19
Emily pose la question :
I don't understand how to do this question:
Nth term for 9, 7, 5, 3, 1
Is there a fast way to do nth term for this question? Or in fact any question?

Penny Nom lui répond.
The nth term 2012-05-05
Justin pose la question :
Which expression can be used tofind the nth term in this sequence? 94,75,56,37,18,.....
My choices are
A. -19n=113        B. -21n+115
C. -19+75        D. 21n+73


Please explain how to get the correct answer. I think it is A. but I am not sure,

Penny Nom lui répond.
How long will it take lee to catch up with jodie? 2012-03-21
kirsten pose la question :
for example, if jodie is on the bus travelling at 10 m.p.h and lee is walking at 4 m.p.h how long will it take lee to catch up with jodie?? what is this mathematical name for this
Harley Weston lui répond.
Three consecutive terms of an arithmetic sequence 2011-10-30
Juliette pose la question :
Find X when x, 1/2x + 7, 3x -1 are consecutive terms of an arithmetic sequence.
Penny Nom lui répond.
A sequence 2011-08-14
intesar pose la question :
how do i figure this out 0,1/6,2/9,3/12
Penny Nom lui répond.
The third term of a sequence 2011-08-13
sammantha pose la question :
Find the 3rd term of the sequence, an=1.5(4)n - 1.
Penny Nom lui répond.
A ratio as a fraction in lowest terms 2011-08-12
jonecia pose la question :
write this ratio as a fraction in lowest terms 707days of 112days?
Melanie Tyrer lui répond.
The nth term of a sequence 2011-07-01
Rachel pose la question :
I am trying to help my son get ready for our Aims test and I am not much help. The sequence is 2,5,10,17 The question is which equation represents the rule for finding the nth term for this sequence

a. an=n + 1
b. an=2n2
c. an=n2+1
d. an=2n+1

Penny Nom lui répond.
The nth term 2011-04-30
Samantha pose la question :
predict the general term, or the nth term, An for the sequence.
1/2,2/3,3/4,4/5,5/6

Penny Nom lui répond.
The sequence 2,3,5,5,8,7,11 2011-01-19
taylor pose la question :
number relationship in number sequence 2,3,5,5,8,7,11
Chris Fisher and Penny Nom lui répond.
What is next in the sequence? 2011-01-13
jodi pose la question :
what is next in the sequence 1, 1/4, 1/9, 1/16, 1/25
Penny Nom lui répond.
Identify each polynomial by its degree and number of terms 2011-01-10
betty pose la question :
Write in standard form and identify each polynomial by its degree and number of terms. How do you do this?
Penny Nom lui répond.
The nth term 2010-11-22
Daphne pose la question :

Question from Daphne, a student:

Hi,
My name is Daphne and I am having trouble with a math problem. I am given this pattern below and asked to find an expression for the number of Bs in the nth term of the pattern. Someone please help!!!

ABBA
AABBBAA
AAABBBBAAA
AAAABBBBBAAAA

The next part asks me to find the ratio of Bs to total letters in the nth term.

Finally it says to use my expression to determine which term has exactly 35% Bs.


Penny Nom lui répond.
Terminal zeros 2010-11-04
morgan pose la question :
if I have to multiply 1*2*3*4*5*6*7*8*9*10*11*12*13*14*15*16*17*18*19*20 how many terminal zeros do i get?
Penny Nom lui répond.
rat sequence 2010-09-24
Vishal pose la question :
this is known as rat sequence. I want to know the logic pf this :-

1,2,4,8,16,77,145

Chris Fisher lui répond.
The nth term 2010-09-14
Anna pose la question :
The problem is 2n-2. find the nth term. I'm lost as how to even begin
Penny Nom lui répond.
The nth term 2010-05-09
Jessica pose la question :
what is the nth term of 3, 9, 19, 33, 51
please help

Walter Whiteley lui répond.
How many terms are in the simplified expression? 2010-04-29
Anu pose la question :
The expression (x+y+z)^2006 + (x-y-z)^2006 is simplified by expanding it and combining like terms.
How many terms are in the simplified expression?

I've spent hours on this. pls help!!!
Also, is answering these questions a paid job for you or is it volunteer work?
I'd like to join an ask and answer site for math, (when I grow up)
How does one go about doing that?

Robert Dawson lui répond.
A sequence 2010-04-13
Essence pose la question :
hello, I am having trouble doing my math homework. It asks me to write the first five terms of each sequence .I can not figure it out because it is a fraction.

The Problem Is:

{2n+1/2n}

Penny Nom lui répond.
Constants and coefficients 2010-03-12
lourdes pose la question :
identify the coefficients, constant term(s), and like terms of the expression.
8x + 9 - 3x
17 - 2a + 5a - 1
7m - 7 + 6m - 6
-10 -15r -22r + 8

Penny Nom lui répond.
A geometric sequence 2010-02-22
Kelsey pose la question :
_, 2, _, _, 250, _

i don't know how to fill in the missing terms

Penny Nom lui répond.
The first five terms of a sequence 2010-02-14
Joanne pose la question :
Find the first five terms of the sequences with the nth term given as follows. n^2+3n
Penny Nom lui répond.
A sequence 2010-02-07
Shalev pose la question :
hi,

i had a job interview yesterday. it had mathematical questions. couldn't solve 1. i m obsessed with it. please find out what the answer is..

it goes like this: 2,4,5,5,8,6,_,_,14,8

thank u very much

Claude Tardif lui répond.
A sequence 2010-01-27
Haku pose la question :
if there are 8 dots in the first shape, 13 in the second, 19 in the third, and 26 in the fourth, then what is the formula?
Penny Nom lui répond.
A sequence 2010-01-22
brahmaji pose la question :
0 7 26 63 _ 215 342 fill the blank? find the missing number
Robert Dawson lui répond.
The adjacency matrix of an undirected graph 2010-01-15
Bhavya pose la question :
Let Cn be the undirected graph with vertex set V = {1,2,3,...,n} and edge set E = {(1,2), (2,3), (3,4),.... , (n-1,n), (n,1)}. Let An be the adjacency matrix of Cn.
a. Find the determinant of An.
b. Find (An)^2

Robert Dawson lui répond.
7 36 14 18 28 9 56 x y 2009-12-06
lisa pose la question :
what is the sequence of x and y
7 36 14 18 28 9 56 x y

Penny Nom lui répond.
What number comes next? 2009-11-25
Mark pose la question :
Can someone help and give me the break down of how to solve. 5,3,1,-1
Penny Nom lui répond.
What's the next term? 2009-11-03
bharat pose la question :
if
1=5
2=25
3=325
4=4325
5=?

Robert Dawson and Penny Nom lui répond.
A sequence 2009-10-20
Alyce pose la question :
The rule of this sequence is k=1/8n. Find the 8th term of the sequence.

1/8, 1/4, 3/8, 1/2, ...
Thanks!

Penny Nom lui répond.
The next three terms 2009-10-16
Shawn pose la question :
I'm a parent and don't know how to help my 6th grader solve for this problem.

Name the next tree terms in this sequence and tell the rule used to find each:

-1,0,1,0,1,2,3,8,25,.....

Chris Fisher lui répond.
What is the next term? 2009-10-04
julia pose la question :
patterns 18 46 94 63 52 61 what is the next one?
Penny Nom lui répond.
How many terms are there in this sequence? 2009-09-28
tabby pose la question :
How many terms are there in this sequence?
5,1,-3,...,-111

Penny Nom lui répond.
A sequence 2009-09-19
Oliver pose la question :
I am struggling to work out the missing terms in the following sequence:

1, 3, _, 7, 11, 18, _

Chris Fisher lui répond.
A sequence 2009-09-15
Derek pose la question :
what are the next four numbers in this sequence 1/8, 1/4, 3/8, 1/2...
Penny Nom lui répond.
The nth term of a sequence 2009-09-11
Michael pose la question :
My son has this question as part of his key stage 3 maths homework-

The nth term of a different sequence is n - 2/n^2.

We've got to find the first three terms of the sequence.

Claude Tardif lui répond.
Divide and reduce to lowest terms. 2009-09-06
Karen pose la question :
Divide and reduce to lowest terms. Use the cancellation technique as needed 4 2/3 divided by 12 14/3 divided by 12/1 not sure wheer to go from here with the cancellation technique
Penny Nom lui répond.
A sequence 2009-07-11
jamie pose la question :
what is the next number in the sequence and what is the relationship of the numbers? 36,16,20,10,12, _
Penny Nom lui répond.
A sequence 2009-05-26
Jay pose la question :
what is the equation that would give me the next 3 numbers in this progession: 0,1,5,14,20
Stephen La Rocque lui répond.
A sequence 2009-05-18
Richard pose la question :
This is my question about sequences. Write down the nth term of the following sequences.

1/2, -3/4, 9/8, -27/16

Plz help me solve the question!

Penny Nom lui répond.
A fraction in its simplest form 2009-04-02
Michael pose la question :
I'm in 4th grade and need to express decimals as a fraction in its simplest form. Is there a step by step method to figure out?

ex 0.64 = 64/100 = ?

Robert Dawson lui répond.
Leading terms and leading coefficients 2009-03-31
Susan pose la question :
Write the polynomial P(x)=x^3-3x^4+17x+11-4/3x^2 in descending order. Identify the leading term and the leading coefficient.
Penny Nom lui répond.
A sequence 2009-03-13
Shelly pose la question :
Which sequence satisfies the rule n/4?
Stephen La Rocque lui répond.
A sequence 2009-03-11
Vly pose la question :
2; 6; 26;126;626 find the nth term
Harley Weston lui répond.
1 3 6 10 15.... 2009-02-26
Allie pose la question :
1 3 6 10 15.... i know the pattern is +2 +3 +4 +5 and so on...but i dont know how to write an equation to find the nth term. help!
Robert Dawson and Claude Tardif lui répond.
Find an expression for the nth term 2009-02-20
Dawn pose la question :
Find an expression for the nth term:

x= 1 2 3 4...n
y=11 8 5 2...?

I think it's a linear relation but don't know the equation that goes with it.

Stephen La Rocque lui répond.
0/0 2009-02-15
Justin pose la question :
Hello, I was just wondering, what is the difference between 0/0 being represented as nullity or as an indeterminate form?

Justin

Harley Weston lui répond.
The sequence 5, 12, 19, 26, ... 2009-02-04
Vickie pose la question :
Hello, Here's the question. Ryan wanted to play basketball on a team, He started practicing shooting everyday to improve his skills. The first day he make 5 shots, the second day he made 12 shots, the third day he made 19 shots, and the fourth day he makde 26 shots. If the first day was March 1 and the pattern continues, how many shots will Ryan make on the last day of April and the last day of July? My daughter's answers were 425 for April and 1069 for July. Are these correct and what would be the formula for this question? ? +N=? I don't know please help. Thank you, Vickie
Robert Dawson and Penny Nom lui répond.
Constants, and coeficiants 2009-01-10
Kelsey pose la question :
I am having trouble trying to remember what like terms, constants, and coeficiants are. My math teacher hasent been explaining it very well and i was wondering how to remember what they are, and what they are? I dont understand the concepts.
Stephen La Rocque lui répond.
The middle term of an arithmetic sequence 2008-12-15
Leigh pose la question :
Find the sum of the first fifteen terms of an arithmetic series if the middle term is 92
Penny Nom lui répond.
The nth term of a sequence 2008-11-20
kim pose la question :
Find the next 2 terms of the sequence.
11n+2.5

Harley Weston lui répond.
The nth term of a sequence 2008-11-16
Robin pose la question :
How do I solve for the next term in the following sequence, I just don't want the answer...I want how to do it to. x,x -1, x -2

Also, how do I solve for the nth term? I can't understand the explanations I've found. He has numbers subscripted in his equations.

Victoria West lui répond.
1/8, 2/7, 1/2, 4/5, ..., ... 2008-11-06
katie pose la question :
Inductive reasoning, what 1/8, 2/7, 1/2, 4/5, what would be the next two in th sequence.
Penny Nom lui répond.
A sequence 2008-10-26
Nicole pose la question :
what is the rule to this sequence 3,6,12,24,48.....
Penny Nom lui répond.
The sequence 49,48,46,43,39... 2008-10-26
Kyle pose la question :
What number comes next in the series 49,48,46,43,39...?
Stephen La Rocque lui répond.
The sequence 6,1,6,2,6,4,6,8,6, 2008-10-26
Kyle pose la question :
What number comes next in the series 6,1,6,2,6,4,6,8,6,?
Stephen La Rocque lui répond.
Put in lowest terms 6a^2c/8ab 2008-10-24
hana pose la question :
put in lowest terms 6a^2c/8ab
Stephen La Rocque lui répond.
nth term 2008-10-22
jen pose la question :
what is a nth term and how do i find the nth term of any sequence
Penny Nom lui répond.
The nth term 2008-09-29
shauna pose la question :
The first five numbers in a sequence are
40, 37 34, 31, 28
Find an expression for the nth number in the sequence.

Penny Nom lui répond.
The Intermediate Value Theorem 2008-09-16
A. pose la question :
When dealing with the intermediate value theorem you have the function x^2. It bounces on the axis so you can't tell if lies on the interval [a,b]. So is the ivt proven false or does the ivt not tell you all the roots for sure.
Harley Weston lui répond.
The nth term of a sequence 2008-09-13
lavett pose la question :
what is the Nth term in the sequence when the sequence is 2,4,8,16... and the term numbers are 1,2,3,4...
Stephen La Rocque lui répond.
Coefficients, Like Terms, and Constants 2008-08-14
Maddie pose la question :
How Would I Answer This Problem?

  Coefficients Like Terms Constants
3x+7      
4m+(-3n)+n      
6kp+9k+kp-14      
-8y+6ab+7-3ba      
c+2c+c-5c+1      


I Would Really Appreciate It If You Could Help Me
Sincerely,
Maddie

Penny Nom lui répond.
Non-terminating, non-repeating decimals 2008-08-03
Peter pose la question :
How do you take a random, non-terminating, non-repeating decimal into a fraction?
Stephen La Rocque lui répond.
Like terms 2008-07-14
Jana pose la question :
Hello, i am a student in year 8 doing Algebra. My Teacher is doing a sheet with us and it asks us to find Like Terms.
The Questions have sentences and you have to find the Like Term. I was wondering, does it matter when there is numbers that are different? are they still like terms?
I'm really confused, i'll write out an example of the questions, so you know what i mean.

It says to find the like terms:
(1.) c- 3c + 7c
(2.) 4x - 7x + 5x
(3.) 3xy + 4 xy

Penny Nom lui répond.
Express as a function of x 2008-07-14
Rita pose la question :
Express the area A of an isosceles right triangle as a function of x of one of the two equal sides.

NOTE: I always see the phrase "Express as a function of x" in math textbooks.
What exactly does that phrase mean?
I also have seen it written as "Express in terms of x."

Penny Nom lui répond.
4 by 4 determinants 2008-06-27
rav pose la question :
How to solve problems of determinants which has four rows and four columns& please give me easy tips to solve permutations and combinations problems.
Harley Weston lui répond.
Determinants 2008-05-02
Henry pose la question :
I have a question about solving 3x3 matrices.

The traditional way, or at least the way I've been taught, is that if one has a 3x3 matrix such as:

[ a b c ]
[ d e f ]
[ g h i ]

one solves it according to this formula:

[ei - hf) - (bi - hc) + (bf - ec) = determinant.

According to a book I'm now studying to prepare for the California CSET exam, there is another, easier, way to solve it:

[ a b c ] [ a b ]
[ d e f ] [ d e ]
[ g h i ] [ g h ]

In other words, one repeats the first two rows of the matrix and adds them to the right.

At this point, the determinant is calculated thus:

(aei) +(bfg) + (cdh) - (gec) - (hfa) - (idb).

Is this, in fact, correct?

Harley Weston lui répond.
The nth term 2008-03-16
ryan pose la question :
need help figuring nth term for 1, 2, 5, 14, 41...... could you please help
Penny Nom lui répond.
1, 1, 2, 3, 5, 8, 13, ___ ___ ___ 2008-03-13
Karen pose la question :
What is the rule for the following pattern, and what would come next?

1, 1, 2, 3, 5, 8, 13, ___ ___ ___

Penny Nom lui répond.
Find the next terms 2008-02-20
Darrin pose la question :
I was given a number sequence and can't figure out the next terms to this

2,9,20,35,66,91......

Penny Nom lui répond.
O.T.T.F.F.S.S 2008-01-25
Omar pose la question :
What is the next letter in the following sequence:

O.T.T.F.F.S.S

Penny Nom lui répond.
1/2, 1/2, 3/8, 1/4, 5/32, 3/32, 7/128 2008-01-22
Neil pose la question :
Find the next two terms in the following number sequence

1/2, 1/2, 3/8, 1/4, 5/32, 3/32, 7/128

Find a general rule for the nth term of the sequence

Penny Nom lui répond.
A percent as a fraction 2007-11-24
Abby pose la question :
write 43.75% as a fraction or mixed number in lowest terms.
Penny Nom lui répond.
Area of a 17-sided lot 2007-11-21
Lynda pose la question :
My uncle is wanting to buy this piece of land [a 17-sided polygon] but we are questioning the acerage total. the measurements are [on the attached diagram].
Stephen La Rocque lui répond.
The sequence 3,12,26,45.... 2007-11-12
Tra pose la question :
I can seem to find the realtionship in these sequence of numbers, I am looking for the next three. How can I determine that, I have tried everything??!!!

3,12,26,45....

Penny Nom lui répond.
For which values of k will k/240 be a terminating decimal? 2007-10-28
Clara pose la question :
For which values of k will k/240 be a terminating decimal?
Stephen La Rocque lui répond.
The nth term 2007-10-18
shannon pose la question :
Ok , what i am having problems with is the nth term. I get how the numbers come together, but i am having trouble with finding the nth term.
Penny Nom lui répond.
77,49,36,18,... 2007-10-11
Kim pose la question :
Find a pattern and predict what comes next in this sequence 77,49,36,18,________________.
Penny Nom lui répond.
calculating percentages for my class 2007-10-09
Cori pose la question :
I teach a class in which there are seven projects/quizzes worth 10% each, and the midterm and the final are each worth 15%. No problem figuring out their final grade, but I have to give a mid-term average, having only FOUR of the seven 10% things, and the midterm test. The closest I've come to an accurate "average" is to just add them together (as equals) and average them.
Victoria West & Harley Weston lui répond.
A sequence of numbers 2007-09-30
eleanor pose la question :
can you find the nth term of the sequence ( n starts at three)

1=?
2=?
3= 4
4= 10
5=20
6 = 35
7= 56

i only hand the 3rd 4th 5th 6th and 7th numbers in the sequence

can you please tell me how to find the nth term and what is it :)

Stephen La Rocque and Victoria West lui répond.
The nth term 2007-09-29
zoe pose la question :
what is the nth term for the following sequence...
5, 2, -1, -4

Leeanne Boehm lui répond.
The sequence 2,4,7,11,16,22 2007-09-22
Simon pose la question :
I thought i understood how to explain how to work out the nth term on a sequence of numbers until my son had this sequence to work out - 2,4,7,11,16,22
We have worked out the 2nd differance is +1 but nothing else seems to fit. Im sure the answer is staring us in the face but cant see the wood for the trees!

Denis Hanson and Steve La Rocque lui répond.
The nth term 2007-09-13
Rookin pose la question :
Can you help me find the nth term for this ... 20,17,14,11,8 i'm really confused oh and could you also tell me how you got the answer?
Steve La Rocque, Claude Tardif and Harley Weston lui répond.
What are the next two terms? 2007-09-11
Sassy pose la question :
I can't figure out what the next two integers in this pattern are 3,9,6,12,9 are.
Stephen la Rocque lui répond.
The nth term 2007-09-09
Conor pose la question :
Please can you help me with this question on the subject of the Nth term. 3.5, 5, 6.5, 8, 9.5

5.1, 7.2, 9.3, 11.4...

Penny Nom lui répond.
nth term in this series 2007-09-07
danii pose la question :
im trying to solve the nth term for this pattern.

1 3 6 10 15 21 28

any help would be appretiated

Stephen la Rocque lui répond.
The next term 2007-09-07
Ariel pose la question :
Please explain to me why -3^2 is a -9. One calculator give me an answer of positive 9.

WHAT IS THE NEXT TERM IN Each sequence/ What is its term number?

1/2, 2/3, 3/4, 5/6 6/7

1, 1/4, 1/9, 1/16

Stephen la Rocque lui répond.
Triangles, squares and pentagons? 2007-09-04
Malea pose la question :
How do you find the nth term in a set of triangles, squares and pentagons?
Harley Weston lui répond.
2,6,7,21,22,66,67 2007-08-28
EDWIN pose la question :
this doesnt make any sense to me....... i cant find the pattern...

2,6,7,21,22,66,67

Leeanne Boehm and Stephen La Rocque lui répond.
A matrix of polynomials 2007-07-18
Mac pose la question :
can you please help me out to solve this ?

Let A be a n*n matrix, the elements of which are real (or complex) polynomial in x. If r rows of the determinant becomes identical when x=a, then the determinant
A) has a factor of order r
B) has a factor or order > r
C) has no factor
D) has a factor of order < r

Harley Weston lui répond.
How many terms in this sequence? 2007-06-11
Jesse pose la question :
How do I find how many terms are in the sequence? 51, 48, 45, ...., -75
Stephen La Rocque and Penny Nom lui répond.
What happens when you have zero's on both sides? 2007-06-05
Lily pose la question :
On the substitution method what happens when you have zero's on both sides of the equation? Is that considered no solution or infinitely many?
Stephen La Rocque and Penny Nom lui répond.
3, 6, 12, 21, 33, 48, 66 2007-05-02
Siew pose la question :
I need to find the nth term formula for the sequence :

3, 6, 12, 21, 33, 48, 66

Stephen La Rocque lui répond.
Lowest terms 2007-04-17
Dawn pose la question :
For some reason, I have a hard time with Ratio and/or rate problems. My problem is as follow: Write each rate or ratio as a fraction in lowest terms. 6 days to 39 hours
Stephen La Rocque lui répond.
Write each rate or ratio as a fraction in lowest terms 2007-04-17
Dawn pose la question :
Write each rate or ratio as a fraction in lowest terms. $59.00 for 231 minutes
Stephen La Rocque lui répond.
Find the nth term 2007-02-27
Dinky pose la question :
My teacher has set us a project, but i am having trouble finding the nth term for this. the numbers are: 1, 2, 6, 24, 120 could you please help me? thank you dinky113
Stephen La Rocque and Penny Nom lui répond.
Evaluating a determinant 2007-02-25
Suud pose la question :
Please send me the detailed steps of calculating the determinant of the following 4by4 matrix -1 -3 1 2 -2 0 -1 1 3 2 0 4 0 -3 1 -2
Haley Ess lui répond.
The nth term 2007-02-13
Sarah pose la question :
I am having difficulty in finding the nth term for 7,49,343,2401. Could you please help me in finding the correct answer?
Stephen La Rocque lui répond.
Find the next 3 terms of the sequence 2007-02-07
rose pose la question :
find the next 3 terms of the sequence 2,3,9,23,48,87
Penny Nom lui répond.
5,8,11,14,17 2007-01-18
Mairead pose la question :
the sequence i was given was 5,8,11,14,17 what is the nth term and what is the 10th term ?
Paul Betts lui répond.
1, 3, 6, 10... 2006-12-15
Lisa pose la question :
What is the nth term for the sequence, '1, 3, 6, 10...' and could you say how you got the anwser.
Stephen La Rocque and Penny Nom lui répond.
The nth term 2006-12-15
Lisa pose la question :
I have worked out that the nth term for 1, 4, 9, 16 is n squared and 3, 5, 7, 9 is 2n - 1, so what is the rule for the sequence 1x3, 4x5, 9x7, 16x9?
Penny Nom lui répond.
The nth term 2006-12-14
Hepzibah pose la question :
what is the definition of nth term and n?
Penny Nom lui répond.
How many line segments are necessary? 2006-10-04
Varun pose la question :
If you place 35 points on a piece of paper so that no three are collinear, how many line segments are necessary to connect each point to all the others?
Stephen La Rocque lui répond.
2 5 11 17 23 31 ? 2006-09-28
Bernice pose la question :
How do you determine the next number in the following sequence:
2 5 11 17 23 31 ?

Penny Nom lui répond.
Find the nth term 2006-09-13
Shakira pose la question :

my question is - Find an expression for the nth term of each sequence.

a. 6,15, 28, 45, 66

b, 1/5, 3/8, 5/13, 7/20, 6/29 - these are fractions


Penny Nom lui répond.
13 57 91 11 31 51 ?? 2006-06-15
Chastity pose la question :
im trying to determine the missing number in the sequence 13 57 91 11 31 51 ??
Claude Tardif, Steve La Rocque and Natasha Glydon lui répond.
The nth term of a sequence 2006-05-24
A student pose la question :
please could you give me a formula for the following numbers for my teacher 3 8 15 24 35
Chris Fisher lui répond.
Adding polynomials and counting the terms 2006-04-28
Kris pose la question :
Suppose that two polynomials, each containing 3 terms, are added. Is it possible for the sum to contain more than 3 terms? fewer than 3 terms? exactly 3 terms? Explain.
Leeanne Boehm and Steve La Rocque lui répond.
8,_,4,9,1,_,10,3,_,0 2006-03-08
Rachel pose la question :
I cant figure out this sequence if someone could help me 8,_,4,9,1,_,10,3,_,0
Claude Tardif lui répond.
What names are known for the quarter circle shape? 2006-03-06
Christina pose la question :
What names are known for the quarter circle shape?
Stephen La Rocque and Penny Nom lui répond.
2,4,9,6,5,6,____,____,____,... 2006-03-06
Mike pose la question :
I am having problems figuring out the following sequence:

2,4,9,6,5,6,____,____,____,...

We were able to guess that the pattern simply started to reverse itself, but I was wondering if there were other possibilities.


Claude Tardif lui répond.
The nth term 2006-03-05
Umar pose la question :
my question is what is the nth term for a house of cards 4 stories high if you use the following numbers:
2 7 15 26

Penny Nom lui répond.
The nth term of a sequence 2006-02-21
Mike pose la question :
I'm having trouble finding the nth term in an equation, can you help me?
Stephen La Rocque lui répond.
Finding the nth term in fractions 2006-01-23
Zarina pose la question :
Each term in this sequence is made by increasing the numerator by 1 and the denominator by 3. here are the first five terms:

1/4, 2/7, 3/10, 4/13, 5/16, ...

(a) write an expression for the nth term:

Penny Nom lui répond.
Find the nth term 2005-12-14
Kevin pose la question :
How do i find the nth term of 1 4 9 16 25 36
Penny Nom lui répond.
A 24 sided polygon 2005-12-14
Matt pose la question :
I would like to know if there is a name for a 24 sided shape
Penny Nom lui répond.
Inclusive definitions 2005-12-14
Layla pose la question :

recently the solvable quandary of 5+5+5=550 came up (the question says that you have to put 1 straight line somewhere in the equation to make it true with out turning the "=" into a "not=" sign).

So two answers were put forward:
545+5=550 (the use of a line converting a + into a 4)
AND
5+5+5(less than or equal to)550

There is currently an argument about the second solution. The disagreement is about whether this sign can be used. One person is arguing that the "less than or equal to" sign defines that the number on the left is in the range 550 and below. The other is saying that since the number (which is clearly defined with no variables) can never equal 550, then the "less than or equal to" sign cannot be used in this case.

Which one is the correct definition?


Walter Whiteley lui répond.
Percent or percentage 2005-11-03
Kenneth pose la question :

Which word should be used in the following?

Change a (percent or percentage) to a decimal.

Should the word percent be used only when a number precedes it as in 45 percent?


Harley Weston and Chris Fisher lui répond.
2, 6, 12, 20, 30, ... 2005-11-01
Rebecca pose la question :
I have a sequence of I have a sequence of 2, 6, 12, 20, 30, and have no idea how to figure out the nth term please help!
Claude Tardif lui répond.
Coefficients, constants and like terms 2005-10-05
Elizabeth pose la question :
In the equation -8y+6ab+7-3ab what are the coefficients; the like terms and constants?
Penny lui répond.
Find the next 5 terms 2005-09-24
Grant pose la question :
n+7, 2n-0.5, 4n. Find the next 5 terms of each one and explain the sequence in words
Penny Nom lui répond.
Find the first five terms of this sequence? 2005-09-17
Jade pose la question :
my homework says can you find the first five terms of this sequence? 5n-6 i can`t figure it out.
Penny Nom lui répond.
Finding the nth term 2005-09-12
Paul pose la question :

Hi , Im having a problem helping my daughter to find the Nth Term in the following sequences.

1/3 1/2 3/5 2/3

and

1 3 6 10


Penny Nom lui répond.
1,4,9,1,6,2,5,3,6,4,9,6,4,8,1 2005-08-30
Liz pose la question :
Find the next four numbers to the sequence 1,4,9,1,6,2,5,3,6,4,9,6,4,8,1,___,___,___,___.
Penny Nom lui répond.
A matrix problem 2005-04-04
Alan pose la question :
Let A = 1-10
2-12
abc

where a, b, c are constant real numbers. For what values of a, b, c is A invertible? [Hint: Your answer should be an equation in a, b, c which satisfied if and only if A is invertible.]


Judi McDonald lui répond.
A sequence 2004-12-11
Amanda pose la question :
Find the nth term of the following sequence

4, 10, 28, 82

Penny Nom lui répond.
A sequence 2004-11-19
Liucy pose la question :
Find the Nth term: 10 40 90 160 250
Penny Nom lui répond.
1,3,6,11,18,29,__ 2004-09-21
Guillermo pose la question :
How do you get to the answer of this sequence 1,3,6,11,18,29,__
Claude Tardif lui répond.
A challenge 2004-09-17
Lasse pose la question :
xy
xx
xyx
xxx
xyxx


"x" and "y" each represents a number. Find out the system to make the next line

Penny Nom lui répond.
The nth term 2004-09-08
Alex pose la question :
What is the nth term?... Like what is it?, How do I find it?, and how exactly is used?...
Penny Nom lui répond.
(2x+5y-6) + (3x-4y+12) 2004-09-04
GG pose la question :
I am a grade 9 student and i do not understand a question. Plz help! OK here it is........ (2x+5y-6) + (3x-4y+12)
Penny Nom lui répond.
What is the nth term 2004-04-07
Jason pose la question :
1 4 10 20 35 56 84
what is the nth term

Claude Tardif lui répond.
What's the next term? 2004-03-22
Garrett pose la question :

A friend hit me with these questions and won't tell me the answer nor how... please help? I've racked my brain and did all sorts of formulas, but I can't get it to work out... please...

What's the next number in this series... 5, 12, 17, 29, 46, ?

And this series... 12, 19, 28, 39, 52, 67, ?

and these... ocoa, boco, oboc, dobo, odob, ?


Claude Tardif lui répond.
Dividing zero by infinity 2004-01-08
Jason pose la question :
What do you get when dividing zero by infinity? Our Calculus teacher was pretty sure that the expression was indeterminate from. However, if this is so...Why? Zero divded by any number (except zero) is zero, true. Any number (except infinite) over infinite is zero. So, why isn't Zero divided by infinite zero. A simpler way if I had 4 potatoes and was to split them among 2 friends, each friend would get 2 potatoes. However, if I had 0 potatoes and split them a infinite number of ways, each person would still have 0. Explain please!
Penny Nom lui répond.
Multiplier and multiplicand 2003-12-17
Karen pose la question :
The K-5 curriculum states that at a grade 5 level students should "understand and use the terms multiplier, multiplicand" The curriculum defines 'multiplicand' as " a number being multiplied by another number. A factor." There is no definition given for 'multiplier' Question: Define these words- are they just other words for 'factors'. If so, how important is it that students use these terms? It would seem like 'factors' would be the better choice of words to use. If multiplcand refers to eg. the first factor in the equation and the 'multiplier' the seond term, (if in fact it does)- is this not confusing for students when we teach them that multiplication is commutative?
Penny Nom lui répond.
Indeterminate forms 2003-10-06
A teacher pose la question :
Is it possible for me to find any geometrical interpretation without using calculus to explain indeterminate forms?
Chris Fisher lui répond.
Terminology 2003-08-31
Maria pose la question :
My daughter Veronica is a rising 6th grader and has to complete some Summer Math
assignments and would like to ask you three questions:
  1. ___________ are number pairs that have a product of 1.

  2. You can name any point on a plane with two numbers. These two numbers are called _____________.

  3. A _______________ is the size of a cube that is exactly 1 inch on each edge.
Thanks,

Penny Nom lui répond.
A project about crosses 2003-06-10
Joel pose la question :

I have this project to do about crosses and I can't think of what the answer is for the following questions: What is the area rule of the crosses (the table below will help you)?
Cross NumberArea sq cm
15
213
325
441
561

I also need to know what the formula is for it?


Penny Nom lui répond.
Two sequences that agree in the first 4 terms 2003-05-26
A student pose la question :
Is it possible to have two formulas that define sequences that agree on the first four terms but not the rest?
Penny Nom lui répond.
One one 2003-04-22
Brad pose la question :
find the next two rows of numbers?
     1                        
    1 1                        
    2 1                      
  1 1 1 2                     
  3 1 1 2                    
1 1 1 2 1 3 

Leeanne Boehm lui répond.
Division names 2003-03-10
A parent pose la question :
what is the answer to a division problem called
Penny Nom lui répond.
A determinant 2003-02-13
A student pose la question :

I have to find the determinant of the following matrix

-2 3 1 2 4
-3 0 -2 5 1
4 2 1 -3 5
2 3 4 -1 2
6 0 3 2 -4

Penny Nom lui répond.
Finite differences 2003-02-10
Jenny pose la question :

I need to find a formula that will work with any number.
I am finding the volume of a 3d cross- shape. Here are my results so far:

Term Number      0   1    2    3     4      5
nth term         1    7   25   63   129    231
1rst diff           6   18   38   66     102
2nd diff              12    20   28   36
3rd diff                  8     8    8

I can't seem to find a formula that will work with any number. Any help would be much appreciated.

Penny Nom lui répond.

Radians 2003-01-16
Erikson pose la question :
I am a student in the 10th grade and attending advanced math at my high school. I was assign to do a report about the unit circle and the radian. But there seems to be no information available about the history of the radian; who first found out about them, which civilizations used it if any. Well, hopefully you'll assist me in this troubling question. Thank you for your kind consideration.
Penny Nom lui répond.
What is nth term? 2002-11-06
Joga pose la question :
What is nth term:

First sequence:
2, 4,7,11, 16, nth term

Second sequence:
4,10, 28, 82, nth term


Penny Nom lui répond.
8,27,64 . . . 2002-09-05
Mike pose la question :
We have been trying with no luck all night to complete the following math pattern (next 3 entries) 8,27,64 . . . Any ideas??
Penny Nom lui répond.
1, 2, 4, 8, 16, 32, etc. 2002-09-04
Ginger pose la question :
I've been working with finding the nth term for a few weeks, and i can't seem to figure this one out!

1, 2, 4, 8, 16, 32, etc.


Leeanne Boehm lui répond.
What is the next term? 2002-06-21
A student pose la question :
What is the next term in the sequence:

1, 5, 14, 30.....


Penny Nom lui répond.
Overlapping circles 2002-05-29
Naman pose la question :
There are two circles, big circle with radius R and small one with radius r. They intersect and overlap in such a way that the common area formed is 1/2 pi r 2 (half the area of the small circle) If r=1, find the Radius of the big circle (R)?
Harley Weston lui répond.
Sequences that agree on their first four terms 2002-05-16
Mike pose la question :
Are there two formulas that define sequences that agree on their first four terms, but differ on the fifth term and all succeeding terms?
Chris Fisher lui répond.
What's the next term? 2002-04-29
A student pose la question :
Find the nth term for the following:

1) 12, 30, 56, 90, 132
2) 6, 30, 84, 180, 330
3) 8, 15, 24, 35, 48
4) 10, 17, 26, 37, 50
5) 24, 40, 60, 84, 112
6) 24, 60, 120, 336, 504

Please show the FULL working out.


Penny Nom lui répond.
1,4,27,____,_____46656 2002-02-21
Brenda pose la question :
1,4,27,____,_____46656..... please find the fourth and fifth numbers in this sequence.
Penny Nom lui répond.
Successive differences 2002-01-20
Linsey pose la question :
what is the rule for working out the formula for a sequence with three lines of difference? eg.
                      
                     1, 3, 7, 15, 29 
1st line differences:  2, 4, 8, 14 
2nd line differences:    2, 4, 6 
3rd line differences:     2, 2 

Penny Nom lui répond.
A sequence 2002-01-16
Chris pose la question :
I have spent two days trying to determine the pattern to the following set of numbers: 1,4,9,1,6,2,5,3,6,4,9,6,4,8,1,____. I need the next four numbers to the sequence.
Claude Tardif lui répond.
A sequence of number pairs 2002-01-10
Terry pose la question :
Three is the first number of a pair, and 8 is the second.

a. If 50 is the first number, what is the second number?
b. If 200 is the first number, what is the second number?
c. If 89 is the second number, what is the first number?
d. If a number n is the first number, what is the second number?

3-8
4-11
5-14
6-17
____
____
____
10-29
____
____
____

Peny Nom lui répond.
Algabra 2001-12-13
Stephanie pose la question :
My name is Stephanie. My grade 7 class is doing some strange form of algebra which I've never done nor seen before. We are doing equations like these: 3y - 6 + 7 - 4y = 6y - 6. I don't really understand them and was wondering if you could help me do my homework and explain how to at the same time. It would be really great if you could!!!!! Thank you so much! -Stephanie
  1. -9x - 5 - 8 + x = ?

  2. 5 + 6x - 3y + x + 8y = ?

  3. -x - 3 + 5x + 6y + 8x - 9= ?

Penny Nom lui répond.
Normal lines 2001-12-11
Kristie pose la question :
Why are perpendicular lines called normal lines?
Chris Fisher lui répond.
Fractions in lowest terms 2001-12-05
Thomas pose la question :
how to change decimal to a fraction in the lowest terms .7 .65 .019 .0111 .225 .1225 .625 .25 .025 .26 .875 .5 .75 .750 .33 .09 .44 .15 .12 .90 .044 .2500 .95 .500 .02 .40 .125 .1276 .00009 .45 .125 .1276 .375 .975 .054 .0005 .20 .2 .0001 .85 .80 .9 .0007 9.8 10.17 25.75 48.4 80.35 19.64 276.20 31.042 18.1034
Penny Nom lui répond.
Undetermined coefficients 2001-11-22
Hoda pose la question :
The equation is:

y" - 2y' + y = t et + 4

We need to use The method of Undetermined coefficients. I have tried assuming that the solution is Atet+Bet+C, but all I get is C=4 and I tried (At2+Bt+C)et+D, but again I get 0=0 when I calculate the first and second derivatives, so i get no information on the constants. Any suggestions?


Harley Weston lui répond.
Number sequences 2001-11-17
Stephanie pose la question :
My name is Stephanie. My grade 7 math class is studying number sequences and, to me, they make almost no sense at all. Here I wrote down 2 of the many problems I have for homework and was wondering if you could explain them to me (I have to find the next 3 numbers in each sequence.) It would be a big help!

10, 14, 18, 22, _, _, _.

12, 21, 39, 75, _, _, _.


Penny Nom lui répond.
A sequence of even terms 2001-04-29
A student pose la question :
A sequence c is defined recursively as follows:

c0 = 2
c1 = 4
c2 = 6

ck= 5ck-3 for all integers

Prove that cn is even for all integers.


Leeanne Boehm and Penny Nom lui répond.
Expanding determinants using minors 2001-02-20
A student pose la question :
Question:
1) Determinants by expansion by minors.

i)
| 1 2 1 2 1 |
| 1 0 0 1 0 |
| 0 1 1 0 1 |
| 1 1 2 2 1 |
| 0 1 1 0 2 |


Harley Weston lui répond.
Some terms in a sequence 2001-01-15
jamie pose la question :
Please help as soon as possible! i am stuck with some terms in a sequence. the terms are 1st term=1, 2nd term=10, 3rd term=35, 4th term=84, 5th term=165, 6th term=286. can anyone tell me the formula for the nth term? n is term number
Sukanta Pati lui répond.
A sequence question 2000-10-23
Chell pose la question :
I have the following sequence:

4 16 37 58 89 145 42 20

I have no clue how to arrive at an answer. I've checked to see if it can be defined as an arithmetic or geometric series, and it can't. I've looked for primes and noticed that 37 and 89 are the only primes ... but from there I've lost. Nothing I've tried seems to work, so please help! Thanks a million!!!!


Chris Fisher lui répond.
Find the next term 2000-08-12
Ashley pose la question :
8,27,64
I need the next three numbers & I can't figure it out. I have worked on this all day.

Penny Nom lui répond.
A sequence 2000-06-16
Claire Hall pose la question :
Can you find the formula for the pattern 4,12,24,40,60
AClaude Tardif lui répond.
Simplifing 2000-06-15
Angie Herbert pose la question :
My daughter is having problems with her algebra homework. She is a year 7 pupil at high school in the UK. She has been given homework on simplifying formulae and she doesn't understand how to do them. Here is an example of one of the questions :

9s+7t+5c+5s-3t

can you help her to understand how to do these and perhaps me too.
Penny Nom and Claude Tardif lui répond.

The weight of a watermelon 2000-04-25
Lori Speir pose la question :
If I have a 100 pound watermelon and it is 99% water. If it sits out in the sun all day and is now only 98% water what does it weigh now?
Penny Nom lui répond.
I am in lowest terms. 2000-03-21
Travis Fox pose la question :
I am in lowest terms. When you double my numerator and my denominator the result is 10/15.
Penny Nom lui répond.
Completing a sequence 2000-03-17
David Grimmer pose la question :
Complete the following sequence so that, after the first two terms, each successive term is the average of all the preceding terms.

20__ __ 28 __ __


Penny Nom lui répond.
What's the next term? 2000-02-29
Meredith O'Neill pose la question :
At this point, the whole family wants to know the answer. if possible an explanation. thanks
a sequence ?

16,37,58,89,145 ??


Chris Fisher lui répond.
order 4+ determinants 1999-12-06
Joe Kron pose la question :
Why is it never shown how to calculate the value of 4x4 (or larger size) deteminants by the diagonal multiply methods that are generally shown for 2x2 and 3x3 determinants? The method I'm talking about is called Cramer's Rule??? Is this method not extensible to order 4+ and if not why not? Anyway the method always shown for order 4+ is called "reduction by minors" which is not the answer to this question.
Walter Whiteley lui répond.
Number sequences 1999-11-11
Justin Schessler pose la question :
I CAN NOT figure out this sequence or how we continue this sequence...

3,2,6,5,15,14,___,___,___
Chris Fisher and Harley Weston lui répond.

Area of a triangle from vertex coordinates 1999-04-21
Mark Tyler pose la question :
I'm no schoolkid, but I liked your answers about triangles. You might enjoy a quick look at this, the kids may too.

I was working on a Voronoi dual where I had to calculate the areas of very many triangles expressed as vertex coordinates, so I derived the following very direct formula:

A = abs((x1-x2)*(y1-y3)-(y1-y2)*(x1-x3)) for triangle (x1,y1)(x2,y2)(x3,y3)

I've never seen this in a textbook. Is it original? I doubt it, the proof is only a few lines long.

Regardless, it may be fun for the kids, even if it's not on the curriculum.
Walter Whitley lui répond.

Finding a rule for a sequence 1999-02-17
Lindsey Masters pose la question :
I'm doing a maths investigation and i have a sequence which goes:-

13,16,25,32,45,56,73.

Our teacher told us we have to find a rule by looking at the differences of the terms until we find a constant. The first differences are:-

3,9,7,13,11,17.

The differences of these are:- ......

Please could you tell me how to work it out so that I could work out the rules of similar sequences.
Penny Nom lui répond.

Indeterminate forms 1998-12-11
R. Dixon pose la question :
What is the correct evaluation of infinity/0 ? I've checked three different math sites. One says definitively, that infinity/0 is "not" possible. Another states that infinity/0 is one of the indeterminate forms having a large range of different values. The last reasons that infinity/0 "is" equal to infinity.
Walter Whiteley and Harley Weston lui répond.
Intersection of Planes 1998-12-03
Lindsay Fear pose la question :
My name is Lindsay Fear. I am an OAC student (which is the Ontario equivalent to Grade 12 in most other states and provinces). I am in an Algebra and Geometry course and am currently studying a unit on equations of planes. Our teacher has given us this question that my friend and I have attempted several times, but we are still unable to solve it. My teacher has also suggested using the internet as a resource. The question is:

Prove that a necessary condition that the three planes

 -x + ay + bz = 0 ax -  y + cz = 0 bx + cy -  z = 0 
have a line in common is that
a^2 + b^2 + c^2 + 2abc = 1

Walter Whiteley lui répond.
Terminating decimals 1998-11-16
Debra Karr pose la question :
A college student studying elementary education asked me a question that I could not think of the correct answer. How can you look at a fraction and tell if is a terminating or non terminating decimal?
Jack LeSage and Penny Nom lui répond.
What's the next term? 1998-11-12
Ilia pose la question :
What the formula and explonation for formula for next patterns:

1) 1, 4, 10, 20, 35, 56, 84,...

2) 0, 6, 30, 90, 210, 420,...

Thanks!
Penny Nom lui répond.

The Division Bracket. 1997-04-09
Judy Riley pose la question :
A fellow teacher recently asked if I remembered the exact word for a division bracket (not the symbol with dots, the horizontal line in a fraction, or a solidus). I couldn't. Can you help?
Walter Whiteley and Harley Weston lui répond.
Pronunciation 1996-03-05
Todd Stienhauser pose la question :
Is 123.4 pronounced "one hundred and twenty three and four tenths"or "one hundred twenty three and four tenths"?
Penny Nom lui répond.
 
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