Answer:
640
Step-by-step explanation:
2 pints in a quart
4 quarts in a gallon
8 pints in a gallon
8x80=640
640
 
        
             
        
        
        
Annual depreciation expenses is
[Equipment cost-residual value]÷estimated useful life
Annual depreciation expenses
(20,500−2,500)÷4=4,500
Accumulated depreciation at the end of 2 years I
4,500×2=9,000
Book value at the end of 2 years is
20,500−9,000=11,500
        
             
        
        
        
Answer:

Step-by-step explanation:
<u>Properties of Exponents</u>
The property called Power to a Power shows us how to simplify expressions of the type:

Similarily the property called Power of a product simplifies expressions like:

The company mentioned in the question uses the expression

millimeters per second to calculate the maximum capacity of a photocell with an area of x^3 square millimeters.
First, use the power of a product property:

Now use the power to a power property:

Operate:

 
        
             
        
        
        
Step-by-step explanation:
when having an exponent of an exponent, the exponents are simply multiplied.
so, here we have 3/4 × 2/3 = (3×2)/(4×3) = 6/12 = 1/2
so, simplified, we have 5^(1/2).
now, a fraction as exponent indicates a root to be taken. which root is identified by the denominator of the fraction. 
here this is 2 (of 1/2). so we need to take the square root.
therefore 

is the right answer.