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AQA maths gcse paper 2 7th June 2018 Unofficial markscheme

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Reply 20

Rivsi

Original post by mattlcfc

a lot of these are wrong eg thr women got the highest score and probability was 4/9

u no if any more r wrong?

Reply 21

AvinashAshok

Original post by mattlcfc

a lot of these are wrong eg thr women got the highest score and probability was 4/9

You cannot be sure that a woman had a highest score with a range, so the answer must be men are more consistent

Reply 22

Fallen_Angel_

Original post by mattlcfc

a lot of these are wrong eg thr women got the highest score and probability was 4/9

No the women had the greater range which could mean they had the lowest mark. The probability one im not sure about as i mentioned.

Reply 23

AlexeUK

Original post by p10

did anyone else get -1.5 for the last question
And forr the venn diagram was it 5 in the middle between chemistry and physics
did anyone alos get something like 2x-5 for one question

I got 0.5 for the last question but I wasn't really sure what to do so I am probably wrong there. I can't remember what I put for the venn diagram question.

Reply 24

Ben.07H

Original post by AlexeUK

Yes, I did the same method using sine rule. Looks like we got similar answers too. What answers did others get? Please post.

I got 50.6 for the pentagon house question

Reply 25

AvinashAshok

Original post by p10

did anyone else get -1.5 for the last question
And forr the venn diagram was it 5 in the middle between chemistry and physics
did anyone alos get something like 2x-5 for one question

I think x was 25

Reply 26

Ingrid Franklin

Original post by Nifemi_5

Is this for the higher paper?

Yes - it's for the higher paper

Reply 27

AvinashAshok

Original post by AvinashAshok

I think x was 25

But yea I got -1.4 for the last one

Reply 28

Ben.07H

Has anyone found an unofficial mark scheme that shows the method and answer for each question aswell as how many marks each question was worth? If anyone does see one then plz send post it on here !!!!

Reply 29

mieeeeeeeeeeee

Original post by Fallen_Angel_

AQA MATHEMATICS PAPER 2 CALCULATOR 8300/2H (H) Full unofficial mark scheme. Open to debate.

•

1) Segment

•

2) 6*10^7

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3) 3:2

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4) 400%

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5) The lining up one

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6) (480000/420000)*100=114.2857

114.2857-100=14.2857

(480000/100)*14.2857=68571.42857

68571.42857+480000=548571.43

NO

•

7) A) 15/20=3/4

17/40

B) 17/40

More attempts taken so more accurate sample

•

8) 15:8

Theo 18+4.50n

James 4n

N=6 Theo= 45 James=24

45:24=15:8

•

9) A) 8.35cm≤length<8.45

B) 41.75cm≤perimiter<42.25

•

10) V of Sphere= 4/3πr^3

V of hemisphere= 2/3πr^3

V=18000π cm^3

18000π/4000=14.137

Yes it takes just under a quarter of an hour.

•

11) A)first dice: (UNSURE ABOUT THIS ONE)

1/3 less than 3

2/3 3 or more

Second dice:

1/3 Less than 3

2/3 3 or more

1/3 Less than 3

2/3 3 or more

B) 1/3*1/3=1/9

C) 1/3*1/3=1/9

2/3*1/3=2/9

1/9+2/9=3/9=1/3

•

12) A) 2

B) answer stays the same

•

13) 8X^2-8/4x+4 =8(X^2-1)/4(X+1)

8(X^2-1) is DOTS

8[(X-1)(X+1)]/4(X+1)

(X+1) cancels out

8/4=2

2(X-1)=2X-2 a=2 b=-2

•

14) Sprinkler question

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15) Men had more consistent scores than women because smaller IQR

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16) A) d=m/v

Rearrange and solve for m

2400*3.8=9120kg

B)V=area of cross section*length

V=πr^2*L

3.8=π*(0.5)^2*L

3.8/π*(0.5)^2=L

L=4.84

Ill finish later

237

26 minutes ago

Report post
-1: segment
-3: x:y + 2:3
-pentagon perimeter =50.6cm
-a: Liz is faster // b: her faster speed didn't change this
-2300 for the volume question
-mass question: 9120kg
-simplify algebra question: 2x-2
-surface area: 539 cm2
-correct: would fill in less than a quarter of an hour (14.14)
-28a: f(2x) + g(x-1) = 9+x // 28b: -7/5 or -1.4

Reply 30

Ingrid Franklin

Original post by Nifemi_5

Is this for the higher paper?

Yes, the higher.

Reply 31

Pawan123

Original post by p10

did anyone else get -1.5 for the last question
And forr the venn diagram was it 5 in the middle between chemistry and physics
did anyone alos get something like 2x-5 for one question

It was -1.4

Reply 32

Tom0228

yes i did that as well and got that answer

Original post by AlexeUK

Yes, I did the same method using sine rule. Looks like we got similar answers too. What answers did others get? Please post.

Reply 33

mattlcfc

im pretty sure the first one was a sector?

Reply 34

AvinashAshok

Original post by AlexeUK

How did people find the paper 2 exam overall?

Personally I found it much easier than paper 1 and I think I've done well.

Reply 35

El357

I got none of those answers :frown:

Reply 36

El357

Original post by mattlcfc

im pretty sure the first one was a sector?

A sector is formed by two radii

Reply 37

p10

Original post by Pawan123

It was -1.4

sorry i mean -1.4

Reply 38

Nifemi_5

Original post by El357

Let’s gather a markscheme! Reply with answers
•segment
•5:2
•400%
•liz (cosine rule) (86m)
•liz would still arrive first
•To show that there was only one exact point when the two graphs crossed you should’ve workout out that’s the two values of x we’re both -1/2
• x + 16

What?! So both sine and cosine rule came up? That was so vague of AQA and now I'm so disappointed coz I thought they were both gonna come up in the next paper