Answer:
3 3/5
Step-by-step explanation:
 
        
             
        
        
        
Answer:
1500 feet
Step-by-step explanation:
In 1 sec= 25 feet
In 1 minute= 60 seconds= 25*60 feet
= 1500 feet.
 
        
                    
             
        
        
        
Acute angle i think about 60
        
             
        
        
        
 Answer:
76.8
Step-by-step explanation:
The mean is the sum of the values divided by the total number of values.
63+73+92+63+93 / 5 = 
384 / 5 = 76.8
 
        
                    
             
        
        
        
When dealing with radicals and exponents, one must realize that fractional exponents deals directly with radicals. In that sense, sqrt(x) = x^1/2
Now, how to go about doing this: 
In a fractional exponent, the numerator represents the actual exponent of the number. So, for x^2/3, the x is being squared. 
For the denominator, that deals with the radical. The index, to be exact. The index describes what KIND of radical (or root) is being taken: square, cube, fourth, fifth, and so on. So, for our example x^2/3, x is squared, and that quantity is under a cube root (or a radical with a 3). Here are some more examples to help you understand a bit more:
x^6/5 = Fifth root of x^6
x^3/1 = x^3
^^^Exponential fractions still follow the same rules of simplifying, so...
x^2/4 = x^1/2 = sqrt(x)
Hope this helps!