Answer:
a) The length of segment AC is approximately 5.83 centimeters. 
b) The angle ACD is approximately 34.5º.
Step-by-step explanation:
a) Since  , the length of segment
, the length of segment  is determined by Pythagorean Theorem, that is:
 is determined by Pythagorean Theorem, that is:


The length of segment AC is approximately 5.831 centimeters. 
b) Since  , the length of segment
, the length of segment  is determined by this Pythagorean identity:
 is determined by this Pythagorean identity:


The angle ACD is determined by the following trigonometric expression:





The angle ACD is approximately 34.448º.
 
        
             
        
        
        
Answer:
135 miles in 3 hours
Step-by-step explanation:
 
        
             
        
        
        
Answer:
(x-2)^2-11
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
1. He added 5 instead of subtracted 5.
2. He should have subtracted 5.
3. 2 2/3
Step-by-step explanation:
3x+5=13
subtract 5 to both sides 3x=8
divide both sides by 3 x=8/3 or 2 2/3