Answer: The second one, “A rabbit jumps 2 feet. A kangaroo jumps 16 feet. The kangaroo jumps 8 times as far as the rabbit
 
        
             
        
        
        
From the law of sines, we have:

, 
where x and y are the sides opposite to angles X and Y, respectively.
Substituting the known values, we have:

, thus                           

.
Using a calculator, we can find that arcsin(0.31)=18 degrees, approximately.
We know that sine of (180-18)=162 degrees is also 0.31. But 162 and 51 degrees add up to more than 180 degrees.
Thus, there is only one triangle that can be formed under these conditions.
 
        
        
        
Answer:
25 because 50 minus 25 is 25
 
        
                    
             
        
        
        
5x-1 is greater than or equal to -11