flflvm97

Thanks for welcoming me haha

You guys are cool equally

Because this is maths site,

I will express as equation.

Zegroes = CPhill

flflvm97 = Zegroes + CPhill

Therefore, flflvm97 = 2Zegroes

                            = 2CPhill

Just kidding 

y=x

The gradient for equation perpendicular to another is always $$-\frac{1}{m}$$

m being the gradient of original function.

gradient of y=x is 1

Therefore, $$-\frac{1}{1}$$=-1

So it's y=-x which is inverse to the original function.

thank you, I'm new here though hehe

You will see me often from now on :)

Thanks, Phill.

I'm just doing what I should do.

I want to participate to this forum as much as I can.

(My english is not good though :()

TY

That's full step of getting percentage of any numbers.

I'm just trying to explain as more detail as I can.

Thank you for asking though :)

Hey guys, 

Learning how to use calculator is very important, 

but I think what we should do is 

answer it with full steps, which can be used without calculator.

p.s. No offence at all, pls don't misunderstand 

$$\frac{20}{100}*30=6$$

This should be simple enough to understand.

Hope it helped!

This is an easy question on application of algebra.

First, you should write down all the facts you know.

    (P for Phil, L for Lia and C for Cam.)

    P + L + C = 200.30

    P = L + 12.80

    C = 3L

Second, you should find common letter in those equations.

    In this case, it's L.

    So, you should subtitute P = L + 12.80 and C = 3L to P + L + C= 200.30.

    Then you will get (L + 12.80) + L + 3L = 200.30

Third, then you can solve it using basic algebra.

    (L + 12.80) + L + 3L = 200.30

=  5L + 12.80 = 200.30

=  5L = 187.50

=  L = 37.5

Lia collected 37.5.

Fourth, You just subtitute L to other equations.

Then you will get C and P as well.

Hope it helped! 

If you want to get idea of what does it mean, there you go.

So the value of PI is the length from certain point on circle meet the ground to when a certain point on circle meet the ground again. Simply it's one length of a rolling.

Hope it helped! 

You can always use the formula to solve out the percentage.

   (n / 100) x d = a

If I subtitute, 

   (200 / 100) x d = 7

-> 2 x d = 7

-> d = 7 / 2

-> d = 3.5

Therefore, 3.5% of 200 is 7.

Hope it helped!