U just add the exponents.
b^8 x b^4 = b^12
hope this helps :)
        
             
        
        
        
If you post the work, then we might be able to help
 
        
             
        
        
        
7/10 > 4/10 because 7/10 is bigger than 4/10
7/10 = 0.7
4/10 = 0.4
        
             
        
        
        
Answer:
Step-by-step explanation:
You can find the area by cutting it across in the middle into a trapezoid and a rectangle.
The trapezoid will have:
 height = 10-4 = 6ft
 top = 9-6 = 3ft
 bottom = 8ft
So its area = 1/2*(3+8)*6 = 33 ft^2
The rectangle will have:
 length = 10ft
 width = 6ft
So its area = 10*6 = 60 ft^2
Total area = 60+33 = 93 ft^2
 
        
                    
             
        
        
        
Answer:
- Percent increase in dollar = $1,711
- Total in account = $7,511
Step-by-step explanation:
The money in the account had increased by 29.5%. 
This increase in dollars is:
= Amount in account * percentage increase
= 5,800 * 29.5%
= 5,800 * 0.295
= $1,711
The total in his account was therefore:
= Amount invested + increase
= 5,800 + 1,711
= $7,511