Solution: We are given:

Let  be the weight (oz) of laptop
 be the weight (oz) of laptop
We have to find 
To find the this probability, we need to find the z score value.
The z score is given below:

        
        
Now, we have to find 
Using the standard normal table, we have:

0.9236 or 92.36% of laptops are overweight
        
 
        
             
        
        
        
Answer:
7) 230mm
8) 98m
Step-by-step explanation:
7)
7x+8+6x+6+9x-4 =22x+10
if x is 10 mm, 22(10)+10 =230mm
8) perimeter of rec =2( l + w )
=2 ( 2x-5+2x+6 ) = 8x + 2
if x  is 12 metres, 8(12)+2 =98m
 
        
             
        
        
        
B) 7/10 
It is B because there are 7 out of 10 possibilities that you would get a number greater than 7 or an odd number.
        
             
        
        
        
Answer:
216
Step-by-step explanation:
A=2(wl+hl+hw)=2·(12·2+6·2+6·12)=216
 
        
                    
             
        
        
        
Answer:
 The answer is B
Step-by-step explanation:
hope this helps