Answer is From all those aforementioned, the true statement is: Thanh’s grade is 2.5 standard deviations below the mean of the test grades. 
explanation
 The z scores are standard deviations. If, for example, a tool returns a z score of +2.5, it means that the result is a standard deviation of 2.5. Very high or very low (negative) z scores associated
 with very low p values are at the ends of the normal distribution. 
 
 
        
             
        
        
        
Answer:
4
Step-by-step explanation:
If you set the numbers in order from least to greatest, you will find that 4 is the middle value(median)
 
        
                    
             
        
        
        
Given :-
- Two triangles with their two angles equal .
To Find :-
Answer :- 
Here in ∆ABC and ∆EDC , 
 CAB = CAB = CED (given ) CED (given )
-   CBA = CBA = CDE (given) CDE (given)
Therefore by AA similarity criterion , we can say that ∆ABC ~ ∆EDC . Also we know that corresponding sides of similar triangles are proportional . So , 
→ AC/EC = BC/DC 
→ AC/9 = 8/12 
→ AC = 8/12 * 9 
→ AC = 6 
<u>Hence</u><u> the</u><u> </u><u>measure</u><u> of</u><u> </u><u>side </u><u>AC </u><u>is </u><u>6</u><u> </u><u>.</u>
I hope this helps.
 
        
             
        
        
        
The answer will be d i believe
        
                    
             
        
        
        
thats entire side is 12 
Step-by-step explanation:
you have to multiply i think im not good at it sorry