Answer:
19.4
Step-by-step explanation:
50% is one half 
so 9.7 is half of ....
Then .... is twice 9.7
.... = 2 × 9.7 = 19.4
 
        
             
        
        
        
Answer: 28
Step-by-step explanation:
Given
Kenny made 7 serves over the net for every 2 serves that did not go over the net i.e. success rate of Kenny is 

for 36 serves, applying the same success rate, it is

Serves that did not make over the net is 
Thus, Kenny will make 28 serves that make over the net
 
        
             
        
        
        
Answer:
4. 8.0
5. 27.6
6. 35.5 degrees
Step-by-step explanation:
#4- Cos 48= x/12
0.669131= x/12
x=8.0
#5
Sin 78= 27/x
0.978=27/x
0.978x=27
x=27.6
#5
Tan X= 15/21
tan x= .714
inverse tan= 35.5 degrees
 
        
             
        
        
        
Answer:
D
Step-by-step explanation: