In total, Kay took 5+14+2=21exams. she got 80%-90% on 14 of them. the probably is 14/21 which is 2/3. Therefore, the probability of Kay getting 80%-90% on her next exam is 2/3 or 66.6%
        
             
        
        
        
The answer is 7/4 I added my work there sorry if it’s kinda messy
 
        
        
        
Answer:
d
Step-by-step explanation:
Brₐinliest plz close to leveling up
 
        
                    
             
        
        
        
√52-√13+√117
sqrt (4*13) - sqrt (13) + sqrt (13*9)
sqrt(4)sqrt(13) -sqrt(13)+sqrt(13)sqrt(9)
2sqrt(13) -sqrt(13)+3sqt(13)
sqrt(13)[2-1+3]
4sqrt(13)
Choice A
 
        
             
        
        
        
Answer: 3.6
Step-by-step explanation:
(Not the best at math but I am an above level student) 
C= pi x diameter 
C= pi x 1.205
C= 3.7