WAEC Past Questions and Answers - Page 2975

14,871.

The following is the graph of a quadratic friction, find the co-ordinates of point P

A.

(0, 4)

B.

(4, 0)

C.

(0, -4)

D.

(-4, 0)

Correct answer is A

No explanation has been provided for this answer.

14,872.

Find the quadratic equation whose roots are -\(\frac{1}{2}\) and 3

A.

2x2 - 2x + 3 = 0

B.

2x2 - 2x - 3 = 0

C.

2x2 - 5x - 3 = 0

D.

3x2 - 5x - 3 = 0

Correct answer is C

x = \(\frac{-1}{2}\)

x = 3

2x = -1, x = 3; 2x + 1 = 0

x - 3 = 0

(2x + 1)(x - 3) = 0

2x2 - 6x + x - 3 = 0

2x2 - 5x - 3 = 0

14,873.

Simplify (x - 3y)2 - (x + 3y)2

A.

2(x + 3y)

B.

(2x - 3y)

C.

-12xy

D.

6xy

Correct answer is C

(x - 3y)2 - (x + 3y)2 = [(x - 3y) - (x + 3y)]

[(x + 3y + x + 3y)] = [-6y] [2x]

= -12xy

14,874.

The angles of triangle are (x + 10)o, (2x - 40)o and (3x - 90)o. Which of the following accurately describes the triangle?

A.

it is a scalene triangle

B.

it is right angled isosceles triangle

C.

it is an equilateral triangle

D.

It is an isosceles triangle but not right angled

Correct answer is C

(x + 10)o + (2x - 40)o + (3x - 90)o = 180

6x - 120 = 180

6x = 180 + 120

6x = 300

x = \(\frac{300}{6}\)

x = 50

x + 10o = 50o + 10o = 60o

2x - 40 = 2(50o) - 40 = 60o

3x - 90 = 3(50o) - 90o = 60o

Hence, it is an equilateral triangle

14,875.

The set of attitudes and beliefs that determine the behaviour of citizens in a political system is called

A.

socialization

B.

political culture

C.

representative government

D.

devolution

Correct answer is B

Political culture is the set of attitudes, beliefs, and sentiments which give order and meaning to a political process and which provide the underlying assumptions and rules that govern behavior in the political system.