Answer:
B) 24
Step-by-step explanation:
A right triangle is 90°
90-42=48
48/2=24
 
        
                    
             
        
        
        
1/3 + 5/6 + 5/12
1.583333333333333
        
                    
             
        
        
        
Answer:
there are a total of 20 boys and 30 girls in the choir of 50 students
Step-by-step explanation:
Scale the ratio 2:3. so that the numbers on either side sum to 50 . 2+3=5 , and 50÷5=10 , so we scale our ratio by a factor of 10 . So there are a total of 20 boys and 30 girls in the choir of 50 students
 
        
             
        
        
        
Answer:
Two angles are called complementary if their measures add to 90 degrees, and called supplementary if their measures add to 180 degrees. ... For example, a 50-degree angle and a 40-degree angle are complementary; a 60-degree angle and a 120-degree angle are supplementary