Answer:
q+4 + d-3 + n ; first 
Step-by-step explanation:
first :q quarter d dimes n nickels 
then: q+4 quarter d dimes n nickels 
then: q+4 quarter d-3 dimes n nickels 
so you have q+4 + d-3 + n 
first is the only option that has division the other involve subtraction
 
        
                    
             
        
        
        
Answer:6
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer: Move terms to the left side−52+3=−9−5x2+3x=−9−52+3−(−9)=0−
Common factor−52+3+9=0−5x2+3x+9=0−(52−3−9)=0
Divide both sides by the same factor−(52−3−9)=0−(5x2−3x−9)=052−3−9=0
Solution=3±321 over 10
Step-by-step explanation:
 
        
                    
             
        
        
        
Sub in 4 as x
3(4) - 29
= -17
        
                    
             
        
        
        
Answer:
babala
Step-by-step explanation:
The probability of being a universal donor is 6% (O-negative-blood type). Suppose that 6 people come to a blood drive.
a) What are the mean and standard deviation of the number of universal donors among the 6 people?
b) What is the probability that there are exactly three universal donors?