A.\( - 1\)
B.\( - \dfrac{{18}}{{19}}\)
C.\( - \dfrac{{17}}{{19}}\)
D.\( - \dfrac{{20}}{{19}}\)

A.\(\dfrac{2}{3}\)
B.\(\dfrac{1}{3}\)
C.\(\dfrac{1}{2}\)
D.\(\dfrac{3}{4}\)

A.\(\dfrac{2}{3}\)
B.\(\dfrac{1}{3}\)
C.\(\dfrac{1}{2}\)
D.\(\dfrac{3}{4}\)

A.\(37m\)
B.\(38m\)             
C.\(39m\)                                   
D.\(30m\)

A.\(\dfrac{3}{2}\)
B.\(\dfrac{{ - 3}}{2}\)
C.\(0\)
D.\(\dfrac{5}{2}\)

A.\(x = 7\)
B.\(x = 21\)
C.\(x = 8\)                                  
D.\(x = 24\)

A.\(\dfrac{{15}}{4}\)
B.\( - \dfrac{{23}}{4}\)
C.\( - \dfrac{{19}}{4}\)           
D.\( - \dfrac{{17}}{4}\)

A.\(\dfrac{3}{7}\)          
B.\(\dfrac{9}{{21}}\)
C.\(\dfrac{{ - 3}}{7}\)             
D.\(\dfrac{{ - 9}}{{21}}\)

A.\(\dfrac{{11}}{{ - 6}}\)
B.\(\dfrac{6}{{11}}\)
C.\(\dfrac{{ - 6}}{{ - 11}}\)
D.\(\dfrac{{ - 11}}{{ - 6}}\)

A.\(8\).
B.\(5\).
C.\(6\).
D.\(4\).