Answer:
Yes.
Step-by-step explanation:
Ratios also function as fractions. 
4/12 = 1/3 = 0.333
5/15 = 1/3 = 0.333
 
        
             
        
        
        
Answer: 90 degrees 
Step-by-step explanation:
Complementary angles add up to 90 degrees. Since a triangle has 180 degrees total, the other angle is 90 degrees 
 
        
                    
             
        
        
        
Answer:
1/4 ch a chance of a car any color
Step-by-step explanation:
if you only have 4 cars and they are different colors, you get 1/4 chance to pick one
 
        
             
        
        
        
Answer:
X=36
Step-by-step explanation:
3x+72=180
3x=180-72
3x=108
x=36
 
        
             
        
        
        
 Answer: 5.14 cu in
Step-by-step explanation:
1/2 (π × d) + d, where d is the diameter of the semi
Perimeter = 1/2 (3.14 x 2) + 2
= 1/2 * 6.28 + 2
= 3.14 + 2