Answer:
122
Step-by-step explanation:
They just added 100 each time so i think the answer is b
Answer: A. 0.20
Step-by-step explanation:
Let A be the event of employees needed corrective shoes and B be the event that they needed major dental work .
We are given that : ![P(A)=0.08\ ;\ P(B)=0.15\ ;\ P(A\cap B)=0.03](https://tex.z-dn.net/?f=P%28A%29%3D0.08%5C%20%3B%5C%20P%28B%29%3D0.15%5C%20%3B%5C%20P%28A%5Ccap%20B%29%3D0.03)
We know that ![P(A\cup B)=P(A)+P(B)-P(A\cap B)](https://tex.z-dn.net/?f=P%28A%5Ccup%20B%29%3DP%28A%29%2BP%28B%29-P%28A%5Ccap%20B%29)
Then, ![P(A\cup B)=0.08+0.15-0.03= 0.20](https://tex.z-dn.net/?f=P%28A%5Ccup%20B%29%3D0.08%2B0.15-0.03%3D%200.20)
Hence, the probability that an employee selected at random will need either corrective shoes or major dental work : ![P(A\cup B)= 0.20](https://tex.z-dn.net/?f=P%28A%5Ccup%20B%29%3D%200.20)
hence, the correct option is (A).
If you subtract the times periods form each you will be able to get your answer. So, 9:14-6:30 it will be 2 hours and 44 mins because from 6:30 to 7 it 30 mins, and from 7 to 9 it’s 2 hours. So far, add the two and you get 2h and 30mins and from 9 to 9:14 it’s 14 mins. So, 2h 30 mins plus 14 mins is 2h and 44mins.