Anyone wanna revise maths

alright imma let u kno

but i doubt it'll work, its not skypes problem, its the laptop tbh

but yh imma let u kno dw

Yeah you got skype we doing in a group so we can all help each other

Does anyone know where the predicted 2016 edexcel paper is?

Yes i do!

tell me / send me the link plz

I wouldn't rely on them unless you've revised absolutely everything?

yh i have

add me Guys

I need help with this

Well we were told that the perimeter of rectangle is 28cm. So if we denote the length of the rectangle as y, then the perimeter would be the whole distance around the rectangle. Which would be 2x + 2y.

We now that the perimeter is 2x +2y, therefore we can equate this to 28 as we were told that the perimeter of the rectangle is 28cm.

Equation 1:

2x + 2y =28

Dividing through by two. Therefore x + y = 14. Then we can rearrange the equation making y the subject. Which gives us, y = 14 - x


Another fact the we now is that the width is xcm and the length of the diagonal is 12 cm. As we have let the length of the rectangle equal to y, we can now you Pythagoras which gives us x^2 + y^2 = (12)^2. Which simplifies to x^2 +y^2 =144

We now have two equations.

Equation 1: x + y = 14 and Equation 2: x^2 + y^2 =144. I would now like you to solve these simultaneous equations. Hope this helped!

Wooow that makes a lot of sense.

I feel scared because I wouldn't know to do this in the exam...

Thanks though

I suggest you do it again in a few days then!

alright imma let u kno

but i doubt it'll work, its not skypes problem, its the laptop tbh

but yh imma let u kno dw

anyone doing igcse edexcel maths ?