· Web viewPractice Paper 2 June 2015 Higher Tier Edexcel Style Mark Scheme Commissioned by The...
Transcript of · Web viewPractice Paper 2 June 2015 Higher Tier Edexcel Style Mark Scheme Commissioned by The...
Practice Paper 2 June 2015Higher TierEdexcel Style
Mark Scheme
Commissioned by The PiXL Club Ltd.
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1a 300 2 M1 for 3x100A1 cao
1b 24 2 M1 for 2 divided by ½ x 6A1 cao
2a 775 2 M1 for 1.25 x620 oeA1 cao
2b 2 3 M1 for 50/1.25M1 for 42 –‘40’A1 cao
3 2.42927(0474) 2 B2 for 2.42927 or better
4 2, 5, 10 2 M1 for
A15 37.7 2 M1 for Π x 12
A1 37.6 to 37.86 Correct diagram 3
7 3
8 2.6 4
9 Correct construction 2
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10 12.97 – 13.48 4
11a 5x – 2 2 M1 expanding bracketsA1
11b x2 + x -12 2 M1 for 3 of the 4 terms from expanding brackets correctA1
12a 1.55 x 104 1 B112b 0.00248 1 B112c 1.96 x 108 2 B2 both correct
B1 one of the two elements correct13a 9, -3, 3 2 B2 all three correct
B1 for one or two correct13b correct graph 2 B1 points correct
B1 joined with a correct straight line14a £4867.20 3
14b 5 2
15 x = 3y = -2
3 M1 for eliminating one variableM1 substituting in for second variableA1 both correct
16 4.16-2.27
3 M1 subsituting into formulaM1 for x = 17±√3349 / 18A1
17a 51.3 – 51.35 3 M1 for cos x = 5/8M1 for using inverse cosA1
17b 10.4 – 10.5 3 M1 for tan 40 = y/12.5M1 12.5 x tan 40A1
18 151 3 M1 understanding sale price = 88%M1 dividing by 0.88A1
19a 5 2 M1A1 cao
19b 26 or 27 2 M1A1 for 26 or 27
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20a 0.2, 0.4, 0.4 2 B1 for 0.2B1 for both 0.4s
20b 0.48 2 M1 for 0.8 x 0.6A1
21 104 2 M1 for valid methodA1
22a b - a 1 B122b Proof 3
23ay =
x50
3M2 for 10 =
500k oe
M1 for y = kx oeA1
23b 7 1 B124 x = -1 or
x = 45
25a 38.5 2 M1 for 0.5 x 10.5 x 8.3 x sin62A1 for 38.4 – 38.5
25b 9.86 3 M1 use of cosine ruleM1 for correct order of evaluationA1 for 9.86 -9.865
26a 3060
2 B1B1
26b fd = 1.5fd = 0.5
2 M1 one fd correctA1
27 1.08 as the LB and UB agree to that no of sig fig
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