Answer:
The choice third ; a=9 , c= 18
Step-by-step explanation:


Answer: 21points
Step-by-step explanation: 3 times 7 equals 21
6 days* 24 hours per day= 144 hours
Final answer: 144 hours
Number of returns = 47
Number of returns that contain errors = 5
Number of returns that does not contain error = 47 - 5 = 42
P(selecting none that contains error in the unreplaced selection) = 42/47 x 41/46 x 40/45 = 68880 / 97290 = 0.708
option C is the correct answer.
Put the answer choice numbers where the x’s are in the equation and then solve. The ones that are equal to 0 once solved will be your answer