For the question with two triangles, I used sine rule and not pythagoras but still got 30.1 (by doing 180-90-59.926). It said that you must show working so would I still get marks? It's technically correct

Reply 584

student2607

Original post by MovedMasterMike

I got 10 because you can't have 10.8 people

I got told you always round up to nearest whole number of people in stratified sampling by my teacher, as it works out to be the right number of people in the sample as other classes have 2.2 for example, evening it out.

Reply 585

mRubern

Original post by MovedMasterMike

y = 5p^2 - x

yep thats what i got :smile:

Reply 586

Genakins

Original post by muchunknown

If you round before the final answer u get 80.4 if you are accurate and don't round and keep the sins in the equation you get 80.1

I didn't round until the end but got 80.4

Reply 587

Cen0015

could anyone put up the marks for each question and perhaps the question itself?

Reply 588

alchima

Original post by junayd1998

yh i got 3 wow do you think that is correct?

My friends got the same answer. Was that a 5 mark question?

Reply 589

Jake Skelton

If you tell me what each question actually involved, I'm sure I can remember the answers to some

Reply 590

bobs your uncle1

I got medium packet too

Reply 591

muchunknown

Original post by Barnewell

80.4
or 80.1 we are having a school debate, you couldd say a maths debate

Sorry it was the other way round 80.4 is accurate 80.1 isn't

Reply 592

username2580959

Original post by ellamoon_22

I asked how did u get 3 pls

250000/72960 = 3.892......
You can't have 3.89 bars so he can carry a maximum of 3 bars

Reply 593

Athy_Obelia

Original post by Benb2000

I'm pretty sure it was three bars

yeah i got 3 too :biggrin:

Reply 594

Montgomerymaths

Original post by Purpleunicorn197

Hi I'm going to start and unofficial markscheme so add your answers
Reps are not necessary but would be appreciated :smile:

It would be really useful if you could remember the question numbers
1. Order numbers correctly and include a key
b) 0.45
2a. 30abc
b. 3(y+2)
c. x^2-3x
3. Smallest packet was best value for money because it was cheapest per bag of crisps
4. Green- 0.09 Red- 0.36
5. Ratio 4:3
b. New height 480
6. x= 9.25
7a. 20.3
b. 68.04kg
c. 2.61m
8. 124 degrees
9.
10.-
11.
12. 144
13. 3.8
14.
15.-
16.
17.- **** my life kms
18.
19.-
20. x= 0.29 or x= -2.29
21. 144 degrees
22. F.d- 1.6, 3.2, 2.4, 1.8, 0.3
23. -1/3x+4
24. 2x/(x+1)(x-1)
25. 80.1

Reply 595

danv

Original post by Lolwol

23) was 3-x/(x-3)(3x-4)

yeah thats what i got.

Reply 596

JoeR12345

Original post by Purpleunicorn197

Hi I'm going to start and unofficial markscheme so add your answers
Reps are not necessary but would be appreciated :smile:

It would be really useful if you could remember the question numbers
1. Order numbers correctly and include a key
b) 0.45
2a. 30abc
b. 3(y+2)
c. x^2-3x
3. Smallest packet was best value for money because it was cheapest per bag of crisps
4. Green- 0.09 Red- 0.36
5. Ratio 4:3
b. New height 480
6. x= 9.25
7a. 20.3
b. 68.04kg
c. 2.61m
8. 124 degrees
9.
10.-
11.
12. 30.1
13. 3.8
14.
15.-
16.
17.-
18.
19.-
20. x= 0.29 or x= -2.29
21. 144 degrees
22. F.d- 1.6, 3.2, 2.4, 1.8, 0.3
23. -1/3x+4
24. 2x/(x+1)(x-1)
25. 80.4

7(c) was not 2.61m. It wanted a 145% increase and 2.61m is only a 45% increase. You needed to find 100% of 1.8 (double it) and find 45% of 1.8. Add these two values together (3.6m and 0.81m) to get 4.41m.

Reply 597

Eueu

For question 23 I got -3x - 4 and I was fairly sure that it is correct.

Reply 598

Thorntonali

Original post by Purpleunicorn197

Hi I'm going to start and unofficial markscheme so add your answers
Reps are not necessary but would be appreciated :smile:

It would be really useful if you could remember the question numbers
1. Order numbers correctly and include a key
b) 0.45
2a. 30abc
b. 3(y+2)
c. x^2-3x
3. Smallest packet was best value for money because it was cheapest per bag of crisps
4. Green- 0.09 Red- 0.36
5. Ratio 4:3
b. New height 480
6. x= 9.25
7a. 20.3
b. 68.04kg
c. 2.61m
8. 124 degrees
9.
10.-
11.
12. 30.1
13. 3.8
14.
15.-
16.
17.-
18.
19.-
20. x= 0.29 or x= -2.29
21. 144 degrees
22. F.d- 1.6, 3.2, 2.4, 1.8, 0.3
23. -1/3x+4
24. 2x/(x+1)(x-1)
25. 80.4

Can someone also please add how many marks were awarded for each question x