Edexcel GCSE Mathematics A Higher Paper 2016 Unofficial Markscheme

Reply 460

34908seikj

2

Original post by Radford15

answer for the standard form one? it was divide

7x10^8

Reply 461

eloisenewton_

6

Original post by Giovanni_

What do you guys think are gonna be the grade boundaries? I think I didn't do all that well, I looked over the paper, I got around 70-80 :frown:

70-80!? That's good definitely at least an A !

Reply 462

ppstudent

1

higher tier

that's my answer - at least what I remember - most should be correct (I hope):
Prism: 750 cm3
2/5 females and 36 male: 90 teachers
standard notation: 1.75 x 10^10
angles: 72*
questionaire: no time framework / answers overlap, how many packs of chips you buy in a week? 0, 1, 2 or 3+, sample from student in a class is biased / too small
last question (the most difficult! for me): 1/4 - (squre root of 6)/12
females in art galleries: 11
quadratic formula (x = 4(x-3)^2)) can't remember exactly but I've got some silly number like 11 +- square root of 132
floor: not enough - she's got 7.5 litres and needs 10
vectors: a+b, a-3b, 1/3(a+b), it tells me that s lies on that line (OT?) because a+b is shared factor (?)
x^2+4x-2 and x^2+4x-6 question: I read values when curve crosses x line for x^2+4x-2 and I dropped next curve by 4 points down (x^2+4x-6) and read it once more, simultanous equation I draw a line y = -x +6 and read x coorrdinates when crosses with the curve
plot graph: 1) median is lower for 16 y.o. 2) range is shorter for 16 y.o. 3) interguartile range is wider for 16 y.o 4) minimal and maximum wages are lower for 16 y.o.

Reply 463

Radford15

Original post by 34908seikj

7x10^8

that wernt it

Reply 464

whitedynamite

5

Original post by Radford15

that wernt it

Yes it was.

Reply 465

Mahrez

12

Original post by ppstudent

higher tier

that's my answer - at least what I remember - most should be correct (I hope):
Prism: 750 cm3
2/5 females and 36 male: 90 teachers
standard notation: 1.75 x 10^10
angles: 72*
questionaire: no time framework / answers overlap, how many packs of chips you buy in a week? 0, 1, 2 or 3+, sample from student in a class is biased / too small
last question (the most difficult! for me): 1/4 - (squre root of 6)/12
females in art galleries: 11
quadratic formula (x = 4(x-3)^2)) can't remember exactly but I've got some silly number like 11 +- square root of 132
floor: not enough - she's got 7.5 litres and needs 10
vectors: a+b, a-3b, 1/3(a+b), it tells me that s lies on that line (OT?) because a+b is shared factor (?)
x^2+4x-2 and x^2+4x-6 question: I read values when curve crosses x line for x^2+4x-2 and I dropped next curve by 4 points down (x^2+4x-6) and read it once more, simultanous equation I draw a line y = -x +6 and read x coorrdinates when crosses with the curve
plot graph: 1) median is lower for 16 y.o. 2) range is shorter for 16 y.o. 3) interguartile range is wider for 16 y.o 4) minimal and maximum wages are lower for 16 y.o.

IQR WAS SAME
and angles one is 69

Reply 466

34908seikj

2

Original post by ppstudent

higher tier

that's my answer - at least what I remember - most should be correct (I hope):
Prism: 750 cm3
2/5 females and 36 male: 90 teachers
standard notation: 1.75 x 10^10
angles: 72*
questionaire: no time framework / answers overlap, how many packs of chips you buy in a week? 0, 1, 2 or 3+, sample from student in a class is biased / too small
last question (the most difficult! for me): 1/4 - (squre root of 6)/12
females in art galleries: 11
quadratic formula (x = 4(x-3)^2)) can't remember exactly but I've got some silly number like 11 +- square root of 132
floor: not enough - she's got 7.5 litres and needs 10
vectors: a+b, a-3b, 1/3(a+b), it tells me that s lies on that line (OT?) because a+b is shared factor (?)
x^2+4x-2 and x^2+4x-6 question: I read values when curve crosses x line for x^2+4x-2 and I dropped next curve by 4 points down (x^2+4x-6) and read it once more, simultanous equation I draw a line y = -x +6 and read x coorrdinates when crosses with the curve
plot graph: 1) median is lower for 16 y.o. 2) range is shorter for 16 y.o. 3) interguartile range is wider for 16 y.o 4) minimal and maximum wages are lower for 16 y.o.

Standard form was 3.5x10^something / 5x10^-3 it comes out to 7x10^8
The questionnaire responses can't have overlapped

Reply 467

gcseexamz

2

Original post by emobha

Question 24 was 100 50 20 definitely I did it after with my teacher

Well no it was 100,25,4

Reply 468

Hello5553

what are the marks for each question? does anyone remember???

Reply 469

RedPeacock

For the circle/shaded square area question (Answer currently on unofficial mark scheme as 100-25pi, however in I factorised it to it's simplest form as the question asked and ended up with 4-pi

Reply 470

natashabeth

hello,
i would like to know what people have put for question 6, thankyou

Reply 471

danv

1

Do you know what the answer for the vectors was?

Reply 472

junayd1998

11

Original post by Radford15

that wernt it

That was the answer for it

Reply 473

Gamer_44

8

Original post by gcseexamz

It was 100,25,4, and 1 ( which was already written )

Yes I got this The constant = 100 didn't it?

Reply 474

34908seikj

2

Original post by RedPeacock

For the circle/shaded square area question (Answer currently on unofficial mark scheme as 100-25pi, however in I factorised it to it's simplest form as the question asked and ended up with 4-pi

As long as you put it as 25(4-pi) - that;s correct.

hi guys

Q1) Volume of prism 750cm^3 (2 marks)
Q2) Transformations (4 marks)
Q3) Questionnaires. No time frame given/No numeric values/too vague. Write a better question.
Sample size too small/biased (5 marks)
Q4) Indicies. p^7, g^2, k^6, -5m+10, n (n-7) (6 marks)
Q5) Estimating 45 to 47 ish (2 marks)
Q6) Number of teachers. 90 (3 marks)
Q7) Coordinates. (-3, -2) (2 marks)
Q8) Spinners. 60 times (4 marks)
Q9) Formula for letters. T = 5x + 20y (3 marks)
Q10) No she doesnt have enough varnish. 37.5cm^2 < 50cm^2 (5 marks)
Q11) Percentage rise. 36% (3 marks)
Q12) Bisectors. Should bisect angle exactly in middle. Leave in construction lines. Draw perpendicular to line, not through it and leave in construction lines. (4 marks)
Q13) Two way tables. 11 females (4 marks)
Q14) Circle inside square. 100-25pi (3 marks)
Q15) Box plots. Comlare the median, IQR and range. 150 people. (5 marks)
Q16) Standard form. 7x10^8 (2 marks)
Q17) Quadratic graphs. x= -0.4 and 4.4
x= -1.1 and 5.1. Simultaneous equation: x= -1.7 and y= 4.7. (This question will have a range of answers so if you're close you probably got it right) (6 marks)
Q18) Fractions. 4/5 and 24/5 (6 marks)
Q19) Inequalities. x < 7 and 7/5 (5 marks)
Q20) Quadratic equation. x= 2 and x=6 (3 marks)
Q21) Probability tree. 0.3, 0.05, etc. Probablity it doesnt rain and match cancelled 0.04 (5 marks)
Q22) Circle theorem question. 69° (5 marks)
Q23)Vectors. a+b, 3b-a , 3/4 (a+b) Point S is the intersection of line PR and OT (6 marks)
Q24) Invese proprtion. K=100 therefore gaps in table were 100, 25 and 4 (4 marks)
Q25) Surds. 3- root 6/12 (3 marks)

(edited 7 years ago)

Reply 477

34908seikj

2

Original post by Gamer_44

Yes I got this The constant = 100 didn't it?

Yea, K = 100

Reply 478

Jamiesmithhd

Original post by junayd1998

How bout the construction Qs how did you do them

you were supposed to draw the line y=4 then see where they intersect, but i instead moved the entire graph down by 4 then measured where it intersected y=0

do you think that will still be correct

Reply 479

natashabeth

who thinks maths is cool
:biggrin:

Edexcel GCSE Mathematics A Higher Paper 2016 Unofficial Markscheme

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