69 is the answer to all questions.
 
        
                    
             
        
        
        
Answer:
b = -8
Step-by-step explanation:
6b = -42
Divide by 6 on both sides
b = -8
 
        
                    
             
        
        
        
In a right triangle the sum of the squares of the lengths of two shorter sides is equal to the square of the length of the longest side.
a.

b.

c.

The answer is A and C.
 
        
        
        
9/17 = .529411...
8/45 = .17777 (the seven repeats)
17/9 = 1.8888 (the eight repeats)
16/90 = .17777 (the seven repeats)
While B and D both equal approximately 1.7. B is the simplified form, So B is the answer
Brainliest would be fantastic :) Have a nice day.