Mathematics 2020 Past Questions | WAEC

Study the following Mathematics past questions and answers for JAMBWAEC  NECO and Post-JAMB. Get prepared with official past questions and answers for upcoming examinations.

46. The graph of the equations y = 2x + 5 and y = 2×22+ x – 1 are shown below. Find the points of intersection of the two graphs.

  • A. (2.0, 9.0) and (-1.5, 2.0)
  • B. (2.0, 8.5) and (-1.5, 2.0)
  • C. (2.0, 8.0) and (-1.5, 2.5)
  • D. (2.0, 7.5) and (-1.5, 2.5)

47. The graph of the equations y = 2x + 5 and y = 2x2+ x – 1 are shown. If x = -2.5, what is the value of u on the curve?

  • A. y = 8.0
  • B. y = 8.5
  • C. y = 9.0
  • D. y = 9.5

48. If (x + 2) is a factor of x2+px – 10, find the value of P. 

  • A. 3
  • B. -3
  • C. 7
  • D. -7

49. In the diagram, O is the centre of the circle. If < NLM = 74o, < LMN = 39oand < LOM = x, find the value of x. 

  • A. 134o
  • B. 126o
  • C. 113o
  • D. 106o

50. Find the least value of x which satisfies the equation 4x = 7(mod 9)

  • A. 7
  • B. 6
  • C. 5
  • D. 4

MATHEMATICS PAST QUESTIONS 2020 THEORY

  1. (a) If A = {multiples of 2}, B = {multiples of 3} and C = {factors of 6} are subsets of μ= {x:1 ≤x 5 ≤  10} find A ∩ B ∩ C

(b) Tickets for a movie premiere cost $18.00 each while the bulk purchase price for 5 tickets is $80.00. If 4 gentlemen decide to get a fifth person to join them so that they can share the bulk purchase price equally, how much would each person save?

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