Answer:
there are 15 birds all together and 5 black birds on the tree.
Step-by-step explanation:
 
        
             
        
        
        
Answer:
A. the first one
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
2
Step-by-step explanation:
The reciprocal of a number n is 
Here n = 0.5, then reciprocal is
 = 2
 = 2
 
        
             
        
        
        
Answer:
1. 0.472
2. 0.25
Step-by-step explanation:
1. reduce the fraction with 3 = 1\4 + 2\9
 write all numerators above the Least common denominator 36 =9 + 8\36
 Add numbers = 17\36 and the alternate form is 0.472
2. Divide the numerator and denominator by three = 3 ÷ 3\12 ÷ 3 = 0.25
 I can't do the others now I have an exam(sorry)
 
        
             
        
        
        
Answer:
1/5
Step-by-step explanation:
Gradient is another word for slope. To find the gradient, we have to use a formula.