Answer:

Step-by-step explanation:
<u><em>The correct question is</em></u>
If b = 9 and c = 13, what is the measure of ∠A? (round to the nearest tenth of a degree)
The picture in the attached figure
we know that
In the right triangle ABC
 ---> by CAH (adjacent side divided by the hypotenuse)
 ---> by CAH (adjacent side divided by the hypotenuse)
substitute the given values

using a calculator

 
        
             
        
        
        
In order to find this you need to find a common denominator. 2/3 and 3/4 common denominator would be 12 and so what you do to the bottom you must do to the top. 2x4 is 8 and 3x3 is 9. that would make 8/12 and 9/12. 8 plus nine is 17 and 12 stays there so the answer is 17/12 which equals 1 and 5/10.
        
                    
             
        
        
        
I think it's D as an answer but I could be wrong
        
             
        
        
        
The best way to solve this one is with a proportion:
     (15 steps) / (5 minutes) = (75 steps) / ('x' minutes)
Cross-multiply the proportion:    15 x = 5 x 75
Divide each side by 15  :                 x = 5 x 5 = <em>25 minutes</em>. 
You are correct, and Paul walks very slowly.
        
                    
             
        
        
        
Here you go! Hope this helps!