Answer:
12-8
15-9
Step-by-step explanation:
 
        
             
        
        
        
The price is now 13.92 (13.9236) <span>16.98-13.92 </span>It's a $3.06 discount 
        
             
        
        
        
Using sin(A+B) = sinAcosB + cosAsinB
sin20cos40 + cos20sin40 = sin(20+40) = sin60degree
= 
 
 
        
        
        
Answer:
x intercept (36, 0)
y intercept (0, 9)
Step-by-step explanation:
x intercept when y = 0 so x = 36
y intercept when x = 0 so 4y = 36; y = 9
Answer
x intercept (36, 0)
y intercept (0, 9)
 
        
             
        
        
        
Multiply both the numerator and denominator by  , which is called the "conjugate" of
, which is called the "conjugate" of  :
:

Why do we pick this number? Recall the difference of squares factorization:

Now replace  and
 and  . Then
. Then

So in your fraction, you end up with

Finally, just expand the product.
