Answer:
 ΔABC and  ΔXYZ are SIMILAR by SSS property of similarity.
Step-by-step explanation:
SSS Similarity Theorem:
Two triangles are said to be similar if their  CORRESPONDING SIDES are proportional.
In ΔABC and  ΔXYZ, if  , then  △ABC∼△YZX
  , then  △ABC∼△YZX
Here, in ΔABC and  ΔXYZ
AB = 9, BC = x , AC = 12 
Similarly, XY = 3, YZ = 2, ZX = 4
Here, 

⇒ Corresponding sides are in the ratio of 3, if BC  =6 units
Hence, if BC  = 6 units, then the ΔABC and  ΔXYZ are SIMILAR by SSS property of similarity.
 
        
             
        
        
        
Divide each number by 3
Then subtract the numbers you got from the answers that you divided
        
             
        
        
        
I think I would first convert it to hours to solve it and then back to minutes at the end. Super strange it’s been asked for in minutes.
So to convert 20 minutes into hours, you need to multiply by 3. 
This means you need to do the same to the other side, cause if they’ve travelled 2.5 miles in 20 minutes, they’d travel 3 times that in an hour.
So this is 7.5m/ph
But then they want it in minutes, so I suppose 7.5/60?
So 0.125m/pm?
        
             
        
        
        
The answer would be C. ADB:310 degrees. 
A major arc includes 3 points. So that eliminates answer choices B and D. 
Angle ACB is a central angle and intercepts the arc AB. The measure of the central angle and the arc it intersects have the same measure. Meaning that Arc AB equals to 50 degrees. 
A circle is equal to 360 degrees. So subtract the measure of the minor arc to 360 to get the measure of the major arc. 
360-50=310. 
Making arc ADB equal 310 degrees