NECO Mathematics Past Questions & Answers - Page 4

16.

A chord XY of a circle with centre O and radius 5.32cm has ∠XOY = 140°. What is the length of the chord to the nearest centimetre?

A.

10cm

B.

6cm

C.

5cm

D.

3cm

E.

1cm

Correct answer is A

No explanation has been provided for this answer.

17.

Construct a quadratic equation whose roots are -\(\frac{3}{2}\) and 7

A.

3x2 + 11x + 21 = 0

B.

2x2 + 11x + 21 = 0

C.

2x2 - 11x – 21 = 0

D.

3x2 - 11x - 21 = 0

E.

x2 - 11x – 21 = 0

Correct answer is C

No explanation has been provided for this answer.

18.

If N25,000.00 is kept in a bank at the rate of 2% simple interest, how much will it amount to at the end of 5 years?

A.

N2,500.00

B.

N5,000.00

C.

N12,500.00

D.

N27,500.00

E.

N125,000.00

Correct answer is D

No explanation has been provided for this answer.

19.

If y + \(\frac{1}{y}\) = 9, evaluate y2 + \(\frac{1}{y^2}\)

A.

27

B.

38

C.

54

D.

63

E.

79

Correct answer is E

No explanation has been provided for this answer.

20.

Which of the following angular inequalities defines an obtuse angle?

A.

0° < x < 90°

B.

0° ≤ x > 180°

C.

90° < x < 180°

D.

90° ≤ x < 180°

E.

90° > x < 180°

Correct answer is C

No explanation has been provided for this answer.