Answer:
Step-by-step explanation:
When the exponent is attached to the trig function like that, its essentially the same thing as taking the entire function to that power.
tan^2(x) = (tanx)^2
 
        
             
        
        
        
If two events are independent, then
 .
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Use formulas for conditional probabilities:
 .
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For independent events these formulas will be:
 .
.
Now in your case  and
 and  .
.
This shows that the only correct choice is A.
 
        
                    
             
        
        
        
-12 is an integer because all fractions are rational numbers.
        
                    
             
        
        
        
Step-by-step explanation:
The bike cost $199 to get $199 you do a number line then label 520 then at the end label 321 so then you do -20 then -100 then -50 then -20 then -9. so now you add them up 20+100+50+20+9 which equals =199 
so bike cost $199
then 520%×199= 1034.8
or 520%×321=1669.2 
so the  percentage is 1669.2 or 1034.8 probably 1669.2 but they bot count.