40. Multiply each row in the first matrix by each column in the second matrix.
The answer would be C.
41. E. Matrix
42. D. Transformations
43. C. determinants
44. B. equal matrices
45. A. Zero matrix
Answer:
D. Survey every 10th customer to enter the store
plz mark as brainliest
Answer:

Step-by-step explanation:
Sin = opposite / hypothenuse
Sin A = 40 / 41
Answer: 
no?? 0 out of anything would just be zero! it could be a 0 or a 000.00/anything and the answer would still be zero!
it's rational, but not reasonable ;)