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UNOFFICIAL MARKSCHEME Edexcel Maths Calculator paper 09/06/2016

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Original post by Chloetbqh
Wait but why would u have to work out the arc length of inside sector,u only need the outside one?


The question asked for the perimeter of the shaded area, so you need both arc lengths + 8 (from parts of the radius).
Reply 521
Avatar for elli_s
elli_s
5
Original post by mrpaper
how was it

wondering what you got on the last one?


I got 80.4
How did people get 3 bars can anyone remember csuse i got 2. This is what i did

Density= mass/volume
Mass= density× volume

Mass=8*21600(15*12??)
Which gave me 17200

172800/1000=172.8
250/172.8=1.5 rounded to 2???
medium packet was the best value??? thats what i put
Original post by Wolfram Alpha
29.25.


yay
Original post by alchima
hi I got 80.38 on the last question and 3 metal rods :smile:


yh i got 3 wow do you think that is correct?
Original post by DrPeter
Never round up in the middle of calculations !!


yhh how didd you find the test?? It seemed harder than previous years, but haven't got anything wrong so far gutted i lost a few marks in non-ca;c
Original post by Chloetbqh
Wait but why would u have to work out the arc length of inside sector,u only need the outside one?


Because you had to find the perimeter of the shaded section
25. Becomes 80.1 if you don't round before the end (being accurate)
Reply 529
Avatar for s_ovo
s_ovo
1
HIGHER PAPER : Angle question find x
with parallel lines forgot what number it was
Original post by GoodGirlFaith
Did anyone else get two minus numbers as the answers for the quadratic equation one? I can't remember exactly what I put but I swear a teacher once told me that one should be positive and the other negative.
How do you answer the mean height of the trees question? I can never do those.
Overall, I thought the paper was quite good, though edexcel seem to be obsessed with crisps- first Richard and his survey and now working out the best value pack.


No, you're not supposed to have double negatives for quadratics - one positive, one negative. As for the trees question, you had to find the midpoints of the frequency ranges and then multiply that by the values in the other column (I forget what it's called). Then add all the values and divide by the number of values.

(With Edexcel's crisp questions and AQA's copious amounts of alcohol-related questions in their biology paper, I feel like I know exactly what the exam writers have during breaks.)
Reply 531
Avatar for danv
danv
1
Original post by alchima
hi I got 80.38 on the last question and 3 metal rods :smile:


It was 3 s.f. wasn't it?
Original post by SweetStarlight14
The question asked for the perimeter of the shaded area, so you need both arc lengths + 8 (from parts of the radius).



Oh ok thx, uggghhh more marks dropped but how much would I get for doing perimeter of whole shape? Do u think?
Original post by Katie1103
What did your graph look like when you did the table of values?


a curve (sideways 's')
Original post by funky2722
no its 80.4 but theyll accept 80.1 i think. It depends whether or not you used precise values, by storing in calculator


i did not round any values up until 80.1
Reply 535
Avatar for LokiiR
LokiiR
9
Original post by ellamoon_22
How did people get 3 bars can anyone remember csuse i got 2. This is what i did

Density= mass/volume
Mass= density× volume

Mass=8*21600(15*12??)
Which gave me 17200

172800/1000=172.8
250/172.8=1.5 rounded to 2???


you get the volume which is 9120
9120 * 8 = 72960
72.96kg

250/72.96 is 3.42...
round off to 3
Original post by GFH_Ginger
it depends tho cos the exams were quite easy so the boundaries will be higher


Ur quite right but paper 1 wasn't very easy tho
Original post by Adnan1996
What was question 3 on?


the rectangle. you had to find perimeter
Reply 538
Avatar for Hennajj
Hennajj
Original post by Wolfram Alpha
For the question about the image and pixels, I got 500 for the new height. Anyone?


480 because I multiplied the 2 by 240 and got 480. Glad I got this one right because I failed the rest of the paper...
Original post by s_ovo
HIGHER PAPER : Angle question find x
with parallel lines forgot what number it was


OH yeah I got 124!

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