Answer:
   A:  HL
Step-by-step explanation:
The hypotenuses of these right triangles are marked congruent.
One leg of these right triangles is marked congruent.
The HL theorem applies.
 
        
             
        
        
        
You need to use a ratio of height (H) to shadow length (L) to solve the first problem. It's basically a use of similar triangles, with two perpendicular sides, and with the shadow making the same angle with the vertical. 
6 ft = 72 ins, so that rH/L = 72/16 = 9/2 for the player. 
So the bleachers are 9/2 x 6 ft = 27 ft. 
For the second problem, 9 ft = 108 in, so that the ratio of the actual linear dimensions to the plan's linear dimensions are 9ft/(1/2in) = 2 x 108 = 216. 
So the stage will have dimensions 216 times larger than 1.75" by 3". 
That would be 31ft 6ins x 54ft. 
Live long and prosper.
        
             
        
        
        
Answer:
Rational.
Step-by-step explanation:

 
        
             
        
        
        
Divide until you get one moth alone then multiply then simplify if you don't know how to simplify please pm me.