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maybe elaborate a bit more? there are many different toopics in fractions, what part are you having troubles with?

@@ End of Day Wrap    Fri 3/4/15    Sydney, Australia    Time 11:30 pm     ♪ ♫

Good Evening,

Answer credits today are given to Alan, Civonamzuk, TayJay, MathMath, Geno3141, CPhill and CowgirlAMS.  A big thank you to each of you.

It is Good Friday.  :)  For Christians this day has great religious importance.  I wish you all a very happy Easter :)

Interest posts:

CPhill recommended a couple of these, thank you Chris.  I really encourage other people to nominate questions too.  So if you see a really interesting question or answer, even if it is your own, please send me the address by private message.  I will be thrilled to receive your recomendation.

FTJ means "For the Juniors"

You have 4 apples left

Sat  4/4/15

FTJ means "For the Juniors"

I just googled it    

Here is this one

There is a calculator on the home page :)

sin(x)/cos(x-1) = sin(x)sec(x-1)

Can someone knowledgable please comment on these answers - I have no idea about chemistry. :)

Thankyou :)

I think that sound logical Chris  :) :/

The ancient Greek mathematicans,who were fascinated by the circle,discovered that if they measured the area of a circle and its radius they always got the same number if they divided the area by the square of the radius.They also discovered that they always got that self same number if they measured the diameter  and divided it by twice the radius. They called this number pi. So you have the formulae Area=pi times r^2 and Diameter= 2pi times r.

(They measured the area of circles by drawing as many tiny squares as they could fit in,and then adding up all the areas of the squares.As you cannot fill a circle entirely with squares,no matter how small you make them,pi cannot be written as a finite number,and is called an irrational number.It has been calculated to hundreds of decimal places by NASA as pi crops up almost everywhere in maths and physics.) Hope this helps.

Thanks Chris, I am going to show how to do it another way.

your way always works (so long as there really is a solution)  , mine only works for whole numbers.

the product of x and y equals -340 and the sum of x and y equals -3 

If I am trying to factoize a quadratic and I am expecting integer answers (whole numbers)

I often use a 'guess' method.

1) They multiply to a neg number so one is positive and one is negative.

2) They add to  a negative so the 'bigger' one is negative.

3) now I more or less forget about the negative signs for a bit.

4) they add to -3 so the numbers are close in value - only 3 apart.

5) Now I am going to look for factors of 340 that suit this.

340 = 34*10 = 2*17*2*5 = 2*2*5*17 = 20*17    that looks helpful, they are 3 apart

6)    Must be -20 and +17

I just counted the posibilities :/

All the ball and all the boxes are identical so all that matters is how many b***s are in each box

4,0,0

3,1,0

2,2,0

2,1,1

and that is it.

4 ways.   :)

Nauseated's solution looks a bit too techo for me.  :/

I saw Geno answer this one somewhere else today!

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this is the answer!

It turns out that this is a double post:

other one   

http://web2.0calc.com/questions/a-5x5x5-cube-is-formed-by-assembling-125-unit-cubes-nine-unit-squares-are-painted-on-each-of-the-six-faces-of-the-cube-according-to-the-pat

Do not double post like this

Please follow these instructions if you want to repost

2.5+2.5+2+100 = 107

between jan, stan and jav makes

$${\frac{{\mathtt{107}}}{{\mathtt{3}}}} = {\mathtt{35.666\: \!666\: \!666\: \!666\: \!666\: \!7}}$$

the have an average of    $$35\frac{2}{3}$$     clocks each    :)

Great answer anon :)

That is another really tricky little question.

thanks Geno :)

https://www.mathsisfun.com/dividing-decimals.html

NOTE

$${\frac{{\mathtt{22}}}{{\mathtt{7}}}}$$      IS NOT   $${\mathtt{\pi}}$$

Sometimes it is used as an approximation for pi    :)

When the both the boxes and the b***s are indistinguishable then it is a partition question.

The partition function is defined as the number of k-element partitions of N.

In this case, the b***s are the k-element and the boxes are N.

Partitions of 4 constraint of 3. Sometimes denoted as Part(4,3)

$$\displaystyle \text {List: Part(4,k)}

4=4

2+2=4

2+1+1 = 4 \leftarrow \text {This is the only solution}

1+3=4$$

There is only one (1) way to Partition 4 b***s into 3 boxes

Wolframalpha scripted link :

I bet a lot of students get that one wrong.  The wording is really tricky.

Thanks Geno for that great answer.   :)

Thanks MathMath,   thumbs up from me :)

Welcome to the forum :)