Past Questions And Answers
(a) Copy and complete the table.
\(y = x^{2} - 2x - 2\) for \(-4 \leq x \leq 4\)
| x | -4 | -3 | -2 | -1 | 0 | 1 | 2 | 3 | 4 |
| \(x^{2}\) | 16 | 9 | 4 | 1 | 0 | 1 | 4 | 9 | 16 |
| \(-2x\) | 8 | 6 | 4 | 2 | 0 | -2 | -4 | -6 | -8 |
| \(-2\) | -2 | -2 | -2 | -2 | -2 | -2 | -2 | -2 | -2 |
| \(y\) | 22 | 13 | 6 | 1 | -2 | -3 | -2 | 1 | 6 |
(b).jpg)
(c)(i) \(x^{2} - 2x - 2 = 0\)
\(\therefore y = 0 ; x = \text{-0.7 or 2.7}\)
(ii) \(x^{2} - 2x - 4\frac{1}{2} = 0\)
\(x^{2} - 2x - 4\frac{1}{2} + 2\frac{1}{2} = 0 + 2\frac{1}{2}\)
\(x^{2} - 2x - 2 = 2.5\)
When y = 2.5, \(x = \text{-1.3 or 3.3}\).
(iii) Line of symmetry at x = 1.
View Discussion (0)WAEC 2005 THEORYMaro Merchant Bank plc is to issue N500,000 ordinary shares of 50k each at N 3.00 per share. Applications were received for N1,550,000 shares fully paid, N1,250,000 shares are to be issued on a pro rata basis and excess subscriptions were dishonored and refunds made? The refund due to an application for N25,000 shares is?
- A. N45,000
- B. N30,000
- C. 7,500
- D. N5,000
Correct Answer: B. N30,000
This question is based on selection poems from Johnson, R. et al (eds.): New Poetry from Africa; Soyinka, W.. (ed.):Poems of Black African; Senanu, K.E. and Vincent, T. (eds.):A Selection of African Poetry; Maduka, C.T. et al: Exam Focus: Literature in English; Eruvbetine, A.E. et al (eds.): Longman Examination Guides and Nwoga, D. I. (ed.):West African Verse
In Odia Ofeimuun's We must Learn Again to Fly, the use of 'we' gives the poem a
- A. universal appeal
- B. personifying effect
- C. symbolic undertone
- D. dramatic sensation
Correct Answer: A. universal appeal
How many isomeric dichlorobenzenes are obtainable?
- A) 1
- B) 2
- C) 3
- D) 4
Correct Answer: C) 3
Explanation
To understand the number of isomeric dichlorobenzenes obtainable, we first need to know what isomers are and how they apply to dichlorobenzene.
Isomers are compounds that have the same molecular formula, but different structural arrangements. Dichlorobenzene has a molecular formula of C6H4Cl2, which means it has a benzene ring with two chlorine atoms attached to it. The chlorine atoms can be attached to the benzene ring in different positions, leading to different isomers.
There are three possible positions for the two chlorine atoms on the benzene ring:
These positions give rise to three distinct isomeric dichlorobenzenes. Therefore, the correct answer isOption C: 3.
Traffic signs are usually
- A. informative and persuasive
- B. punitive and informative
- C. persuasive and regulatory
- D. regulatory and informative
Correct Answer: D. regulatory and informative
Explanation
Road signs are usually regulatory and informative. Regulatory signs instruct road users on what they must or must not do under certain circumstances. Informative signs provide information about the road conditions, route directions, and points of geographical or historical interest.
In question below fill the gap with the appropriate option: Every programming language and software package .... limitations
- A. have its
- B. have their
- C. has its
- D. has their
Correct Answer: C. has its
Simplify: \(\frac{2x^2 - 5x - 12}{4x^2 - 9}\)
- A. \(\frac{x + 4}{2x + 3}\)
- B. \(\frac{x + 4}{2x - 3}\)
- C. \(\frac{x - 4}{2x + 3}\)
- D. \(\frac{x - 4}{2x - 3}\)
Correct Answer: D. \(\frac{x - 4}{2x - 3}\)
Explanation
\(\frac{2x^2 - 5x - 12}{4x^2 - 9}\) = \(\frac{3x^2 - 8x + 3x - 12}{(2x)^2 - 3^2}\)
= \(\frac{32(x - 4) + 3(x - 4)}{(2x - 3)(2x + 3)} - \frac{(x - 4) + (2x + 3)}{(2x - 3) (2x + 3)}\)
= \(\frac{x - 4}{2x - 3}\)
Constitutionalism emphasizes that those who govern the state should do so according to
- A. their whims and caprices
- B. laid-down rules of public behaviour
- C. the direction of judges
- D. the dictates of their egos
Correct Answer: B. laid-down rules of public behaviour
Which of the following is an abiotic factor which affects a population?
- A. Predator
- B. Parasite
- C. Consumer
- D. Temperature
Correct Answer: D. Temperature
This question is based on General Literary Principles.
A device used in poetry to achieve emphasis or stress a point is known as
- A. assonance
- B. repetition
- C. alliteration
- D. rhyme