Neco Mathematics 2005 Past Questions and Answers

Question 26:

• NECO 2005

Find the value of 2a - b if a + b = 8 and 4a - b = 22

A. 2
B. 4
C. 6
D. 8
E. 10

Question 27:

• NECO 2005

A flagpole is placed at the top of a tower. The angles of elevation of the bottom and top of the flagpole from a point on the ground 10m away are 40° and 50° respectively. Find the length of the flagpole.

A. 1.8m
B. 3.5m
C. 8.4m
D. 11.9m
E. 17.3m

Question 28:

• NECO 2005

Find the Iength of a diagonal of a square whose area is 288cm².

A. 24cm
B. 48cm
C. 95cm
D. 100cm
E. 124cm

Question 29:

• NECO 2005

Solve for x in the quadratic equation. 2x² + 12x + 10 = 0

A. X = -5, -1
B. X = -5,1
C. X = -3, -2
D. X = 3, 2
E. X = 6, 5

Question 30:

• NECO 2005

A surveyor measured the length of a obtained 42.55 metres. If his measurement was more than the actual length and the percentage error of his measurement was 8%, calculate the actual length of the land

A. 39.40 metres
B. 46.20 metres
C. 46.25 metres
D. 46.50 metres
E. 48.25 metres