If logx 9/16 = - 1/2, then x equals:
A. -3/4
B. 3/4
C. 81/256
D. 256/81
Answer:D
If logx 9/16 = - 1/2, then x equals:
A. -3/4 B. 3/4 C. 81/256 D. 256/81
Explanation: 9/16 logx = - 1/2 .x-1/2 = 9/16,1 = 9 root x = 16 x = 16/9 x = 16/9 x = 16/9 x = 16/9 x =square x = 16/9,x = 256/81 x = 256/81 x = 256/81.