Answer:
there is a 1/2 chance to get heads again 
Step-by-step explanation:
im not entirely sure tho
 
        
                    
             
        
        
        
Answer:
The best estimate for 43x78 is 40x80
Step-by-step explanation:
43 rounded to the nearest ten is 40. 
78 rounded to the nearest ten is 80.  
The answer to 40x80 is 3200
 
        
             
        
        
        
Answer:
5.209 or A
Step-by-step explanation
5^x-4=7
reserve 4
log sides
x-4 log5 and log7  
x-4=log7/log5
+4 or number of your equation
x=log5/log7 +4
use calculator 
get answer
5.209
EDIT: Got a 100 on the test this is correct
 
        
             
        
        
        
Add them all up and divide 6 (the number of terms given). The answer is 9.66 or 9.7 rounded to the nearest tenth.
        
                    
             
        
        
        
Yes she did my dude she really did