Unofficial Mark Scheme June 2017 4H Edexcel IGCSE maths

These aren't in the right order, but we will get them all
1a) tal
B) portugaliy
C) no as a is in the intercept ( 3 in total for question one
2. A) 39 (2) b) y=4.4
3. 15 sides (3)
4. 6m + 9g (3)
5. A) 6 (2)b) 0.525 probability (3)
6. Rupees a) 24 250 b) £21
7. (-1.5, 7) midpoint question
8. Interquartile range is 9
9. Circle Theorem a) 52 (sub tended by the same arch) and 104 (angle in centre is twice angle at circumference
10. Percentage one - 43%
11. 28 (circle quadrilateral) (4)
12.a) prove that 3x^2-10x-117=0 you had times your answer by 2 to get that b) 4.80
13.a) a + c are parallel
B) 2y + 5x = 11
14. X= -1 or 1.25 (differentiation question) (5)
15. Fraction
A) 23/24
B) 31/9
16.algebra
A) e^15
B) 1
C) 4e^8
D) 9x^4
17.-1,0,1,2,3 (2 marks) inequality
18. 58.3
19. Histogram one: frequency density up to 5 on y axis and class width up to 300
20. 82.8 km/h (4)
21. 67.5 degrees (6) quad
22. 5x10^-3n-1 (3)
23. 128/81 (4)
24. Probability 2:
A)0.8 0.2
0.65, 0.35
0.4, 0.6
B) 0.36

For Q17, 0 is not an integer

i got c correct but i dont know why the equation should be y=-5/2x +11/2 instead i wrote it 3y=-5/2x +11/2 and then worked my way to the final answer ofc i got instead of 2y i got 6y
So how much will i lose and how many marks was awarded for this question ?

I'll be honest think the whole thing would have to be right to get the marks, any reason why you put 3y? But it wasn't a big questions so like 2 marks you might lose

first you have to find the lower bound of the distance (the distance was to nearest 0.5 , so u divide it by 2 and get 0.25 and subtract 0.25 from the distance)
Then you have to find the upper bound for the time ,( it was to 1 dp so u divide 0.1by 2 and get 0.05 , then you add that to minutes and divide it by 60 again to covert minutes into hours )
Then yoy divide the distance you found by the time and get the speed (lower bound)

how though? the chance she had of winning was 0.3. that means that there was 0.7 left and the chance she had of losing was three times the chance of her drawing?


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Hey all,

I do have a paper - but not allowed to send it! If you want any particular parts, then please PM me! Thanks

Can i know the marks for the equation of line in the form of integer question ??plz