She needs to score a 91 on her next test because 85+78+77+69+91=400 and 400 divided by 5 gives you a mean of 80.
        
             
        
        
        
Answer:
The probability of the combination {H, T and H} is 0.125.
Step-by-step explanation:
The sample space of flipping a quarter is:
S = {H and T}
The probability of both outcomes is same, i.e. P (H) = P (T) = 0.50.
It is provided that three quarters are flipped one at a time.
The outcomes of all the three quarters are independent of each other.
Compute the probability of the combination {H, T and H} as follows:

                         
Thus, the probability of the combination {H, T and H} is 0.125.
 
        
             
        
        
        
Answer:
x=5 y=8
Step-by-step explanation:
here's your answer. Please mark as brainliest
 
        
             
        
        
        
83 just add the amount of Ella’s and amount of Julio’s
        
                    
             
        
        
        
Answer:
b
Step-by-step explanation: