For all the other viewers of this question, the change was -403 feet or you could say 403 feet i guess but the answer is -403 feet 
 
        
             
        
        
        
Answer:
10√5 - 5√2
or
5(2√5 - √2)
Step-by-step explanation:
Given:
2√5(5 - 5√5)
Required:
Multiply and simplify 
Solution:
2√5(5 - 5√5)
Apply distributive property by multiplying each term in the bracket by 2√5
2√5*5 - 2√5*5√5
2*5√5 - 2*5√5*√5
10√5 - 10√25
10√5 - 10*5
10√5 - 50
10√5 - (25*2)
10√5 - 5√2
Or
5(2√5 - √2)
 
        
             
        
        
        
Answer:
602
Step-by-step explanation:
 
        
             
        
        
        
The correct statement is C. <span>If an angle is an acute angle, then the angle measures less than 90 degrees. 
A and B are obviously incorrect, and D is incorrect because it can be other angle as well, not just acute. </span>