Surds And Indices Q9

9.        (0.04)-1.5 = ?

     A.   25

     B.   125

     C.   250

     D.   625

Answer:

Option : B 

(0.04)-1.5	=		4	-1.5
			100

=		1	-3/2
		25

= (25)^3/2

= (5²)^3/2

= (5)^{(2 x 3/2)}

= (5)(³)

= 125)