(b) 10, 14, 16, 11, 13, 17, 19 2 M1 for indicating region or for 10, 14, 16, 11, 13, 17, 19 listed. A1 cao 25 (a) Improvement 1 C1 appropriate improvement e.g. do not have axes starting at (0,0) oe. (b) Explanation 1 C1 explanation e.g. pine cone has very short width for its length. 26 20 (7 + 4) = 9 No with 4 P1 start process by deriving AC=9 cm and identify – If right angled triangle 72 + 42 reasoning hypotenuse. = 92 M1 42 + 72 49 + 16 = 65 M1 for using eg AC = 65 is not equal to 81 so it is not C1 for concluding explanation that ABC is not a right angled. triangle with evidence. 27 5 P1 for process to state both equations algebraically. 2a + 3c = 28.2 Adult ticket £6.75 M1 for correct process to eliminate one variable 3a + 5c = 44.75 Child ticket £4.90 (condone one arithmetic error). M1 (dep) for correct substitution of their found value to 6a + 9c = 84.6 find other variable OR (indep) correct process to 6a + 10c = 89.5 eliminate second variable (condone one error in c = 4.9 arithmetic). A1 for 6.75 or 4.9 C1 for Adult ticket £6.75 and Child ticket £4.90 in 2a + 14.7 = 28.2 correct money notation 2a = 13.5 a = 6.75 28 Correctly drawn 3 M1 for calculating at least 4 values. curve B1 for plotting at least 4 correct points (condone one error). B1 cao
(b) 10, 14, 16, 11, 13, 17, 19 2 M1 A1 for indicating region or for 10, 14, 16, 11, 13, 17, 19 listed. cao 25 (a) (b) Improvement Explanation 1 1 C1 C1 appropriate improvement e.g. do not have axes starting at (0,0) oe. explanation e.g. pine cone has very short width for its length. 26 20 – (7 + 4) = 9 If right angled triangle 72 + 42 = 92 49 + 16 = 65 65 is not equal to 81 so it is not right angled. No with reasoning 4 P1 M1 M1 C1 start process by deriving AC=9 cm and identify hypotenuse. 42 + 72 for using eg AC = for concluding explanation that ABC is not a triangle with evidence. 27 2a + 3c = 28.2 3a + 5c = 44.75 6a + 9c = 84.6 6a + 10c = 89.5 c = 4.9 2a + 14.7 = 28.2 2a = 13.5 a = 6.75 Adult ticket £6.75 Child ticket £4.90 5 P1 M1 M1 A1 C1 for process to state both equations algebraically. for correct process to eliminate one variable (condone one arithmetic error). (dep) for correct substitution of their found value to find other variable OR (indep) correct process to eliminate second variable (condone one error in arithmetic). for 6.75 or 4.9 for Adult ticket £6.75 and Child ticket £4.90 in correct money notation 28 Correctly drawn curve 3 M1 B1 B1 for calculating at least 4 values. for plotting at least 4 correct points (condone one error). cao
pixl_ppe_march_edexcel_2f_ms.docx