Answer:
A. 7*5 + 4^2 - 2^3 / 4 = 35 + 16 - 8 / 4 = 35 + 16 - 2 = 49
B. The statement of seven times five plus four squared minus 2 cubed divided by 4 is equal to 49. (or whatever your friend's teacher wants when they ask for a complete sentence).
C. PEMDAS - parentheses, exponents, multiplication, division, addition, subtraction
Note:
When remembering PEMDAS, please remember that multiplication actually isn't prioritized over division - they should be performed "simultaneously" from left to right. Same with addition and subtraction. The order is: P -> E -> MD -> AS.
 
        
             
        
        
        
Answer:
30 
Step-by-step explanation:
Here, it is given that the Z – score corresponding to the score X = 45 is 1.5 and the Z – score corresponding to the score X = 40 is... 
Z =  
 
So: 
1/ 1.5 =  and 1 =
 and 1 =  . solve the both equations, we found out:
 . solve the both equations, we found out: 
<=> S = 10 
=> M = 30 
Hence, mean is: 
M = 45 -1.5S = 45 - 1.5 (10) = 30 
 
        
             
        
        
        
Answer:
i think x=-1 and y=3. ....
 
        
             
        
        
        
Answer:
L = 17 m W = 12 m
Step-by-step explanation:
Here is the answer.
 
        
             
        
        
        
I’m confused, can you explain