# Mathematics 2020 Past Questions | WAEC

Study the following Mathematics past questions and answers for JAMB, WAEC 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 = 2x^{2}+ 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 x^{2}+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 = 74^{o}, < LMN = 39^{o}and < LOM = x, find the value of x.

**A.**134^{o}**B.**126^{o}**C.**113^{o}**D.**106^{o}

**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

- (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?