Mathematics Past Questions and Answers

In the given diagram, \(\bar{QT}\) and \(\bar{PR}\) are straight lines, < ROS = (3n - 20), < SOT = n, < POL = m and < QOL is a right angle. Find the value of n.

A 35^o
B 40^o
C 55^o
D 60^o

Question 1627:

Make K the subject of the relation T = \(\sqrt{\frac{TK - H}{K - H}}\)

A K = \(\frac{H(T^2 - 1)}{T^2 - T}\)
B K = \(\frac{HT}{(T - 1)^2}\)
C K = \(\frac{H(T^2 + 1)}{T}\)
D K = \(\frac{H(T - 1)}{T}\)

Question 1628:

Which of the following is used to determine the mode of a grouped data?

A Bar chart
B Frequency polygon
C Ogive
D Histogram

Question 1629:

The area of a rhombus is 110 cm\(^2\). If the diagonals are 20 cm and (2x + 1) cm long, find the value of x.

A 5.0
B 4.0
C 3.0
D 2.5

Question 1630:

Simplify: \(\frac{3x - y}{xy} - \frac{2x + 3y}{2xy} + \frac{1}{2}\)

A \(\frac{4x + 5y - xy}{2xy}\)
B \(\frac{5y - 4x + xy}{2xy}\)
C \(\frac{5x + 4y - xy}{2xy}\)
D \(\frac{4x - 5y + xy}{2xy}\)