When adding decimals always line them up 
for example:    5.23
                      +6.35
                       --------
                      11.58
see simple hope I helped
        
                    
             
        
        
        
-2 because 1st term is 13, take away 5 2nd term is 8 take away 5 3rd term is 3 and take away 5 again 4th term is -2
        
             
        
        
        
Answer:
h = 16.92 m
Step-by-step explanation:
If you mean to man horizontal line of sight  then the height of the tree is:
h = 2m + x
x is one right side and second is distance from the base of a tree 32m.
Tangence in this right triangle is:
 tan 25° = x / 32 => x = 32 · tan 25° = 32 · 0.4663 = 14.92m
h = 2 + 14.92 = 16.92m
God with you!!!
 
        
                    
             
        
        
        
Answer: its 180
Step-by-step explanation: length times width is the area. 15 times 12 is 180