NECO Mathematics Past Questions & Answers - Page 16

76.

Mohammed is 8 years older than Joy now. In five years’ time he will be twice as old as Joy. How old is Joy now?

A.

1\(\frac{1}{2}\)years

B.

3years

C.

4\(\frac{1}{2}\)years

D.

6 years

E.

ong>

Correct answer is B

No explanation has been provided for this answer.

77.

The diagonals of a rhombus are 6cm and 8cm. Find the area of the rhombus.

A.

96cm2

B.

48cm2

C.

24cm2

D.

0.14cm2

E.

12cm2

Correct answer is C

Area of a rhombus = \(\frac{pq}{2}\)

where p and q are the two diagonals of the rhombus.

 

78.

Find x if (x - 2)2 = 1\(\frac{7}{9}\)

A.

\(\frac{2}{3}\) or \(\frac{2}{7}\)

B.

3\(\frac{1}{3}\) or \(\frac{2}{3}\)

C.

3\(\frac{7}{9}\) or \(\frac{2}{7}\)

D.

3\(\frac{1}{3}\) or \(\frac{7}{9}\)

E.

\(\frac{3}{7}\) or \(\frac{2}{9}\)

Correct answer is B

No explanation has been provided for this answer.

79.

Express the product of 0.007 and 0.057 to two significant figures

A.

0.0004

B.

0.00039

C.

0.004

D.

0.0039

E.

0.04

Correct answer is A

No explanation has been provided for this answer.

80.

A man is 40m from the foot of a cliff of height 23m. Calculate the angle of elevation of the top of the cliff from the man

A.

50° 54′

B.

35° 06′

C.

30° 00′

D.

290 90′

E.

29° 54′

Correct answer is E

No explanation has been provided for this answer.