Marking Scheme Paper 13 Express_MYE_20141(a)36.4 % or B1

(b)

B1

21168.672079

B1B1

3(a)

B1

(b)

= B1B1

4(a)

(change to same base)

B1

B1

(b)

B1

5(a)

and

B1B1

(b) | | | ||||||||-4-3-2-10123456

B1

6(a)18CB1

(b)1 unit ------ 200 m12 units ----2400 mB1B1

7

Sub into eq 1

M1

A1

A1

8(a)

B1

(b)

B1

(c)12B1

9(a)9 km/hB1

(b)1m ------ 0.4 s1m ------ 400 msM1A1

10(a)2 cmB1

(b)

Vol. of small bar(prism) = or 26.7 cm3

M1

A1

11(a)72B1

(b)50 %B1

12(a)8.75 kmB1

(b)

0.512 cm2 ------- 0.8 km2B1

B1

13(a)

M1

A1

(b)

M1

A1

14(a)

B1

(b) or

y= 8 or

y= 812 3/5 = 20

20 x 2/5 = 8M1

A1

15(a)(i)

B1

(ii)

B1

(b)8B1

16(a)

h = 2.5 cmM1

A1

(b)75 %B1

171 unit ----- 30 mins12 units ---- 360 mins = 6 hrsM1A1

18(a)

=

=

M1

A1

(b)

=

=

M1

A1

19(a)

Since AB2 + BC2 = AC2 and it obeys Pythagoras theorem, triangle ABC is a right-angled triangle.

B1

(b)48 cm2B1

20(a)540 105 75 105 = 2552x = 255x = 127.5M1

A1

(b)94 + 110 + 12(n 2) = 36012(n 2) =156n 2 = 13n = 15M1

A1

21(a)7x 5 = 27 12x x 20x = 32x = 1.6M1

A1

(b)p = 0 or -6B1

22(a)

B1

(b)

M1

A1

23(a)

y = 1.35M1

A1

(b)(i)$45(Using graph) or $44.75 (Using equation)B1

(ii)40 kmB1

(c)(i)

[B1]

(c)(ii)3 kmB1

24(a)0 m/s2B1

(b)16 m/sB1

(c)

M1

A1

(d)Correct shape and label on y-axis shown ..B1Correct shape and label on y-axis shown ..B1400100

B1,

B1

25(a) - (c)

5