Answer:
I think that is going to be x-3
 
        
             
        
        
        
Answer:
question 3: 1/3 question 4: 5/7 question 5: 2/3
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
<u>The factored form, use variables/numbers outside the square:</u>
<u>The standard form, use variables/numbers inside the square:</u>
- x² + 6x - 4x - 24 = x² + 2x - 24
 
        
             
        
        
        
Answer:
Step-by-step explanation:
X no of questions student answers is binomial with n =40 and p =0.5
If approximated to normal, X is Normal with
mean = np = 20 and variance = npq = 10
P(X>N) >0.10
We use std normal distribution table to get z value first then convert to x value

So 
This is with continuity correction.
Hence without continuity correction this equals 7.2-0.5 = 6.7
x>6.7
n = 7
 
 
        
             
        
        
        
Answer: try the second one
Step-by-step explanation: