(B) x = 40
Step-by-step explanation:
4x + 20 = 180
4x = 160
x = 40
Answer: The required probability is 0.008.
Step-by-step explanation:
Since we have given that
Probability of bachelor's degree = 0.45
Probability of working in nursing = 0.85
Probability of both = 0.4
So, Probability of getting a graduate is currently working in nursing, given that they earned a bachelor's degree would be :

Hence, the required probability is 0.008.
5x-14x=9-90
-9x=-81
9x=81
x=81/9
x=9
9/4-1/7 would be 2 3/28 and -1.8-3.9 would be -5.7