The length is 2.4 
1.2 times 2 to take away the both width sides 
minutes 2.4 from 7.2 you get 4.8 then divide by two because it’s a rectangle it has to length side and you get 2.4
        
                    
             
        
        
        
Answer:
30x + 30y +30
Step-by-step explanation:
 
        
             
        
        
        
Answer: 0.31 or 31%
Let A be the event that the disease is present in a particular person
Let B be the event that a person tests positive for the disease
The problem asks to find P(A|B), where
P(A|B) = P(B|A)*P(A) / P(B) = (P(B|A)*P(A)) / (P(B|A)*P(A) + P(B|~A)*P(~A)) 
In other words, the problem asks for the probability that a positive test result will be a true positive.  
P(B|A) = 1-0.02 = 0.98 (person tests positive given that they have the disease)
P(A) = 0.009 (probability the disease is present in any particular person)
P(B|~A) = 0.02 (probability a person tests positive given they do not have the disease)
P(~A) = 1-0.009 = 0.991 (probability a particular person does not have the disease)
P(A|B) = (0.98*0.009) / (0.98*0.009 + 0.02*0.991)
= 0.00882 / 0.02864 = 0.30796
*round however you need to but i am leaving it at 0.31 or 31%*
If you found this helpful please mark brainliest 
 
        
             
        
        
        
There are 20 C3 possible ways to choose 3 books to read. 
There are 5 C3 possible ways to choose 3 mysteries to read.
The probability that Mariah will not choose all mysteries can be expressed as 1-5C3/20C3.  (These 3 Choices Are True)
There are 1 C3 possible ways to choose 3 books that are not all mysteries. 
The probability that Mariah will choose 3 mysteries can be expressed as 1/5C3.
(These 2 Choices Are False) 
Hope This Helps 
        
                    
             
        
        
        
D as you can see on the number line d is 1/3 of the way to -2