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16 votes

Accepted

Use of the word "solve"?

answered Jun 11, 2014 at 16:02

8 votes

Simple algebra formula for which I can't find the right answer

answered Jun 2, 2014 at 19:43

7 votes

How come the function and the inverse of the function are the same?

answered May 26, 2014 at 20:14

7 votes

$\sum_{n=1}^{\infty} (a_n+b_n)=\sum_{n=1}^{\infty} a_n + \sum _{n=1}^{\infty} b_n$?

answered Jun 5, 2014 at 12:47

7 votes

How can I determine the value of this limit? $\lim\limits_{t \to -\sqrt{8}} \frac{t + 2\sqrt{2}}{3t^2 - 24}.$

answered Jun 6, 2014 at 15:12

6 votes

How do I find the equation of a circle, given radius and centre coordinates?

answered May 29, 2014 at 13:15

5 votes

Can you give me a visual representation on 1/6 of 4/5 to get 4/30?

answered Jun 3, 2014 at 21:30

5 votes

Question about factoring polynomial fraction

answered Jun 4, 2014 at 20:05

5 votes

What is the definition of 'within one' in mathematics

answered Jun 8, 2014 at 19:17

4 votes

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Playing audio files at lower % of regular speed - how long will they be? negative percentage / ratio calculation

answered May 28, 2014 at 18:07

3 votes

If two planes in $\mathbb{R}^3$ pass by the origin, do they necessarily intersect at multiple points?

answered May 28, 2014 at 19:37

3 votes

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Prove by a theorem.

answered May 29, 2014 at 15:41

3 votes

Work-hours problem

answered May 28, 2014 at 12:44

3 votes

finding the least square number divisibe by given numbers

answered Jun 2, 2014 at 14:03

3 votes

Modulus Implication

answered Jun 5, 2014 at 2:07

3 votes

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If the average mark of all students in an exam is $30/100$, show at least $20\%$ of the students got at least $10/100$

answered Jun 4, 2014 at 10:45

3 votes

How to derive $\;a^3 + b^3 = (a + b)(a^2 - ab + b^2)\;?$

answered Jun 6, 2014 at 15:29

2 votes

Help in understanding this absolute value question

answered Jun 4, 2014 at 18:23

2 votes

Unorthodox way of getting the average of two numbers

answered Jun 5, 2014 at 23:42

2 votes

Existence of increasing sequence $\{x_n\}\subset S$ with $\lim_{n\to\infty}x_n=\sup S$

answered Jun 2, 2014 at 22:06

2 votes

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Notation for a set of objects expressed by symbols

answered Jun 3, 2014 at 20:18

2 votes

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Preserving the order of a sequence of real numbers

answered Jun 3, 2014 at 20:44

2 votes

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Solution to this system of equations

answered May 29, 2014 at 19:28

2 votes

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In the proportion $\frac{ x}{100} = \frac{a}{total}$ which is the percent: $x$ or $\frac{x}{100}$?

answered May 30, 2014 at 10:13

2 votes

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How to calculate value of x in (1875+y):(x+y)=165

answered Jun 2, 2014 at 13:15

2 votes

Quick question, Intersection and Spans

answered May 27, 2014 at 18:05

1 vote

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Supremum of two unequal sets are equal

answered Jun 2, 2014 at 13:20

1 vote

Accepted

Preimage simple problem

answered Jun 2, 2014 at 21:55

1 vote

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Completeness property of subsets of R

answered May 29, 2014 at 14:45

1 vote

Finding a vector equation

answered Jun 8, 2014 at 20:28

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32 Answers

Use of the word "solve"?

Simple algebra formula for which I can't find the right answer

How come the function and the inverse of the function are the same?

$\sum_{n=1}^{\infty} (a_n+b_n)=\sum_{n=1}^{\infty} a_n + \sum _{n=1}^{\infty} b_n$?

How can I determine the value of this limit? $\lim\limits_{t \to -\sqrt{8}} \frac{t + 2\sqrt{2}}{3t^2 - 24}.$

How do I find the equation of a circle, given radius and centre coordinates?

Can you give me a visual representation on 1/6 of 4/5 to get 4/30?

Question about factoring polynomial fraction

What is the definition of 'within one' in mathematics

Playing audio files at lower % of regular speed - how long will they be? negative percentage / ratio calculation

If two planes in $\mathbb{R}^3$ pass by the origin, do they necessarily intersect at multiple points?

Prove by a theorem.

Work-hours problem

finding the least square number divisibe by given numbers

Modulus Implication

If the average mark of all students in an exam is $30/100$, show at least $20\%$ of the students got at least $10/100$

How to derive $\;a^3 + b^3 = (a + b)(a^2 - ab + b^2)\;?$

Help in understanding this absolute value question

Unorthodox way of getting the average of two numbers

Existence of increasing sequence $\{x_n\}\subset S$ with $\lim_{n\to\infty}x_n=\sup S$

Notation for a set of objects expressed by symbols

Preserving the order of a sequence of real numbers

Solution to this system of equations

In the proportion $\frac{ x}{100} = \frac{a}{total}$ which is the percent: $x$ or $\frac{x}{100}$?

How to calculate value of x in (1875+y):(x+y)=165

Quick question, Intersection and Spans

Supremum of two unequal sets are equal

Preimage simple problem

Completeness property of subsets of R

Finding a vector equation