Edexcel Exam Answers!

[Plank]

Answers to the Edexcel Higher Linear Tier Exam (new spec) CALCULATOR


1) Probability
a) P(black) = 5/12 (2 marks)
b) P(not black) = 7/12 (1 mark)

2) Using a calculator
11.94117647 (2 marks)

3) Scatter diagram
a) Plot two points (1 mark)
b) Negative correlation (1 mark)
c) Straight line of best fit (1 mark)
d) Approx 12 degs C (1 mark)
e) Approx 1100 metres (1 mark)

4) Angles between parallel lines
i) y = 58 degs
ii) Alternate angle (2 marks)

5) 3D drawing (2 marks)

6) Nth term of a linear sequence
3n + 2 (2 marks)

7) Trial and improvement
x = 2.7 (4 marks)

8)Frequency polygon (2 marks)

9) Angles in a quadrilateral
a) 5x + 60 = 360 (2 marks)
b) x = 60 (3 marks)

10) Ratio and Percentages
a) 10 British cars (2 marks)
b) £94 including VAT (3 marks)
c) £7680 value after 2 years (3 marks)

11) Algebra
a) 2a + 4c (1 mark)
b) S = 9/8 (or 1.125) (2 marks)
c) x (x – 5) (2 marks)
d) x² + 7x + 12 (2 marks)
e) (y + 5) (y + 3) (2 marks)

12) Mobile phones
a) Percentage increase = 7.06% (3 marks)
b) Moving averages = 74 and 83 (2 marks)

13) Cylinder
a) Volume = 503 cm³ (2 marks)
b) Mass = 302 grams (2 marks)

14) Right-angled triangle
a) Area of triangle = 28 cm² (2 marks)
b) AC = 10.63 cm (3 marks)
c) y = 34.8 degs (3 marks)

15) Transformations
Rotation 180 degrees about (1,0) (3 marks)

16) Factors
a) 2² x 3² x 7 (3 marks)
b) 3 and 45 (3 marks)

17) Standard form
3.02 x 10^27 (2 marks)

18) Shading region
Region R is a right angled triangle with vertices at (2,1) (2,4) and (5,1) (3 marks)

19) Area of a sector
221 cm² (2 marks)

20) Inverse proportion
a) q = 136/t² (3 marks)
b) q = 5.44 (1 mark)

21) Histogram
a) Missing numbers: 18, 20, 12 (2 marks)
b) Complete two missing bars (2 marks)

22) Upper and lower bounds
Upper bound = 8.75 miles per litre (3 marks)

23) Algebraic fraction
a) Show quadratic (3 marks)
b) x = 1.22 or x = -3.55 (3 marks)

24) Cosine rule
Angle BAC = 85.5 degrees (3 marks)

25) Exponential curve
k = 1.4, a = 5 (3 marks)

:)

[Karma]

Hey

Thanks for this! +rep, I am not sure on the upper bound one what I put, I found the upper bounds of the 2 values and divided them, would this be the answer then?

Thanks

Karma

[Coldplay]

For the probability question I put the decimals.. like 0.41, thats wrong then?

Also the nth term was n + 3..

[splatttt]

;O!
+REP
thanks :D this is really good mwhahaha.


Do you have the answers to the previous one?

[Puma!]

ooo...


someone goes on TSR then? :D

[Plank]

Hey

Thanks for this! +rep, I am not sure on the upper bound one what I put, I found the upper bounds of the 2 values and divided them, would this be the answer then?

Thanks

Karma

For the upper bound your meant to do the upper bound divided by the smaller bound.


For the probability question I put the decimals.. like 0.41, thats wrong then?

Also the nth term was n + 3..

Decimals are ok. And it was 3n + 2 because there is a common difference of 3 (so its 3n) and then you do the first number in the sequence minus the common difference (5 - 3 = 2) so its + 2. Other people have confirmed this.


;O!
+REP
thanks :D this is really good mwhahaha.


Do you have the answers to the previous one?

Answers to previous one

http://www.habboxforum.com/showthread.php?t=486774

[Coldplay]

Sorry, I got the nth term wrong, didn't realise till I reworked it out =D

Glad about the decimals thing. Thanks =D

[mr.parasols]

Just added up my marks from each and I reckon I got 174/200 in total from both exams. I hope thats good :o

[Soka]

ooo...


someone goes on TSR then? :D

lol was just about to say straight from the student room ;)
Mr M posts a level math papers answers on there too so i use it :eusa_clap

mr. parasols a* last year was 87 and 85 i think on both papers
and 44/48 on coursework i think.
so you should have a* if you did well on coursework, if paper was easier than usual they might rise :P

[Plank]

sorry I should have sourced it :redface_b I did last time I posted the answers but I forgot this time.:eusa_shif :eusa_doh:

[Recursion]

If that is the Higher tear than god help us all that looks easy...

And you do know that the exams are different, even if they are 30 mins apart from each other?

[Florx]

Well copied. http://www.thestudentroom.co.uk/showthread.php?t=584581

Post the source in future.

[Plank]

Well copied. http://www.thestudentroom.co.uk/showthread.php?t=584581

Post the source in future.

You obviously haven't read my previous post.


sorry I should have sourced it :redface_b I did last time I posted the answers but I forgot this time.:eusa_shif :eusa_doh:

[Florx]

I didn't read the whole thread, as I have read the on the original site so I skipped ahead to point out that you didn't make up the answers yourself.

[Plank]

Well read the whole thread then cos the chances are someones already pointed it out.

[Mitch4?]

Hey

Thanks for this! +rep, I am not sure on the upper bound one what I put, I found the upper bounds of the 2 values and divided them, would this be the answer then?

Thanks

Karma

Nope if you find the upperbound of the thing you divide it by, the petrol consumption is not at it's highest, so therefore you divide by the lowest bound :)

[Puma!]

I didn't read the whole thread, as I have read the on the original site so I skipped ahead to point out that you didn't make up the answers yourself.
ooo.

whats your name on TSR?

[Karma]

ooo.

whats your name on TSR?

LOL, How many people here are on TSR?

I'm on TSR, Lookup - Amit92 :)

[Puma!]

tom_91 for me :)

[Throne Sofa]

Hvae you got foundation ones?

I think there were around 5/6 foundation ones in higher papers, seems like I have them all correct :) Dunno about the 3d drawing though. Also trial and improvement 4marks on higher??? theyre the easiet questions ever.