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### 10 Responses to “Questions Archives”

1. susanti April 8, 2011 at 4:18 pm #

I WANT TO LEARN!!!!!!

• Anne April 9, 2011 at 10:36 am #

some marbeles are share among 3boys.Aaron’s share 3/4 of Brian’s share and Brian’s share is 4/5 of Charle’s share. If Aaron and Brian have a toatl 56 marbles altogether.How many marbles do the 3 boys have in all?

2. matharena April 9, 2011 at 11:54 am #

A : B : C
3 : 4 : 5

A+B —> 7 u —-> 56
1 u —-> 8
Altogether: 12 u —> 12 x 8 = 96 marbles

3. claire tan September 19, 2011 at 8:00 pm #

heyy auntie persis,
im claire, i used to b in yr math class for P6?
im having trouble with on how to inverse a fraction.. i can inverse a expression but not so sure on fractions.
like for an example,
f(x)=1/ 3x+4

• Math Arena September 22, 2011 at 1:45 pm #

Hi, Claire,
I suppose you are asking about how to inverse a function in the form of a fraction. There is a general method to inverse a function. First we let y=f(x), and then we try to express x in terms of y. For example, $f(x) = \frac{1}{3x+4}$
let $\frac {1}{3x+4} = y$, then express $y$ in terms of $x$.
Thus, we have
$1 = 3xy+4y$
$1-4y= 3xy$
$\frac{1-4y}{3y} = x$
$f^{-1}(y) = \frac{1-4y}{3y}$.
Then we change everything from $y$ to $x$ by convention, we have
$f^{-1}(x) = \frac{1-4x}{3x}$.
That would be your inverse function to the original function.

4. Chania Loveyouforever April 27, 2012 at 7:36 pm #

Hi do you have foundation maths questions?

5. matharena April 30, 2012 at 11:04 am #

Hi,

Would you like to post some foundation math questions here so we can help to solve them?

6. Syarah September 17, 2012 at 12:03 am #

Hi Can You Pls Post Sme Foundation Maths Questions…So I could learn hw to slv it..

7. mariengmh October 22, 2012 at 5:19 pm #

Really good! Please post more questions for me to learn.