Answer:
45. B, 9 + 0 = 9
46. D. 9 x 1 = 9
47. D. 0
48. B. 1/6 x 6 = 1
49. A
Step-by-step explanation:
The easy answer: If, say, B is the zero matrix, i.e.
then
None of these!
x + y + z = x + y + z only over here
9165.0
13*94*7.5 = 9165.0