Answer:
15 and 17 are both undefined, 16 the slope is 0
Step-by-step explanation:
 
        
             
        
        
        
Answer:
A ≈ 40.3 cm²
Step-by-step explanation:
The area of right Δ ACD is calculated as
A =  bh ( b is the base and h the perpendicular height )
 bh ( b is the base and h the perpendicular height )
Here A = 50.5, b = CD and h = AC , then
 × 14 × AC = 50.5
 × 14 × AC = 50.5 
7 AC = 50.5 ( divide both sides by 7 )
AC ≈ 7.214
The area of Δ ABC is calculated as
A =  × BC × AC × sin36°
 × BC × AC × sin36°
   = 0.5 × 19 × 7.214 × sin36°
   ≈ 40.3 cm² ( to 3 sf )
 
        
                    
             
        
        
        
7.5 is already in decimal form.
 
        
             
        
        
        
Answer: The ladder will be unsafe because its angle with the ground is greater than 70°.
Step-by-step explanation: hope that helps