Answer:

Step-by-step explanation:




Final Answer: 
 
        
             
        
        
        
The interest earned by $318 investment is 9/100 x 318= $28.62 
        
             
        
        
        
Answer:
57.5 degrees
Step-by-step explanation:
Assuming this is a triangle
a is adjacent is ∠B
b is opposite of ∠B
Use the inverse tangent equation: 
This equals to 57.52880771
 
        
             
        
        
        
I have no clue what the answer would be, I’ve worked on it for 25 minutes, I will get back to you if I figure it out :,)
        
             
        
        
        
5 by 3
3rd one
there we have to find hypotenuse.