Edexcel C1 16 May 2012 Post Exam Thread - Paper and Solutions in the FIRST POST

just to verify this for myself... am I reading question 6 correctly? Is the answer 9450p or 94.50pounds?

for 6 (b) can you use halfxn(a+(n-1)d) and can you leave the answer in pence?

45 I think.

x

your right

one triangle 30 and one 15 ?

btw the answer to question 7b. c is not equal to 6, c is equal to 7.

just to verify this for myself... am I reading question 6 correctly? Is the answer 9450p or 94.50pounds?

Cheers for this, Arsey. Just a quick question about number 3: I completely fudged it up - I didn't rationalise and instead broke down the denominator into sqrt(4x3) - sqrt(4x2) --> leading to 2/(2rt3 - 2rt2) --> then cancelling the 2s to be left with rt3 - rt2. I realise this is completely wrong, but would there be ANY credit in this? Because I believe I wrote down the correct a and b values at the end. Cheers.

for 6 (b) can you use halfxn(2a+(n-1)d) and can you leave the answer in pence?

for most past papers 43 out 75 would probs be one off a C,

I did the same as you and then i multiplied the top and bottom by (2rt3 + 2rt2). This lead to (2rt3 + 2rt2)/1 which means that a=3 and b=2. If you got the answers they will give you the marks because there are many ways of solving the question. If you didn't get the answer you will still probably get method marks.

That would be fine

That would be fine