Answer:
<h3>The event

denotes the complement of event A.</h3><h3>The value of

is 0.001</h3>
Step-by-step explanation:
Given that A denotes some event .
And also given that P(A)=0.999
<h3>To find the value of

:</h3>
Here the event
denotes the complement of event A Therefore
contains all the events that does not occur in A.
We know that the total probability is 1
So we have that




Hence the complement of event A is 
<h3>Therefore the value is

</h3>
Answer:
Volume injected = 1.65 ml
Step-by-step explanation:
mass of Demerol =45 mg.
density of pre-filled in syringe = 50 mg/ml
Volume = 45/50 = 0.9 ml
For atropine mass = 0.3 mg
density= 400 mcg/ml [ Note : 1 mcg = 0.001 mg]
volume filled = 0.3/400(0.001) = 0.75 ml
So, the total volume filled = 0.75+0.9 = 1.65 ml
The steps i took into doing these problems did very well for me
X weight 131
---- = -------------
18.8% 100%
Cross multiply and get 24.6 pounds