ECZ 2020 · GCE Paper 2 · Question 3 — Sets
Question from ECZ 2020 · GCE Paper 2 · Question 3
(a) Solve the equation 2x2 + 3x - 7 = 0, giving your answers correct to 2 decimal places.[5]
Verified working — step 1
Use the formula with a = 2, b = 3, c = -7.(b) The Venn diagram below shows the number of students in each of the three courses at a University.
(b(i)) Given that there were 25 students altogether, find the value of x.[2]
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Add every region of the Venn diagram and set equal to 25.(b(ii)) How many students studied
(b(ii)(a)) Mathematics and Chemistry only,[1]
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"Maths and Chemistry only" is the Math…(b(ii)(b)) one course only,[1]
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"One course only" is the th…(b(ii)(c)) Chemistry and Physics but not Mathematics?[1]
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"Chemistry and Physics but not Maths" is t…The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
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