Answer:
20
Step-by-step explanation:
16-12/4+3(6-2)      subtract 6 and 2
16-12/4+3+4          divide 12 and 4
16-3+3+4              subtract 16 and 3
13+3+4                 add all 3 numbers
13+7
20
 
        
             
        
        
        
Answer:
B) -19
Step-by-step explanation:
-7 + 2x = -45
+7             +7
2x = -38
/2      /2
x = -19
 
        
                    
             
        
        
        
Answer:
113.1cm
Step-by-step explanation:
area=  r²
r²
r= half the diameter r=6
a= 6²
6²
a= 36
36
a=113.1 cm