When you want to find zeros of rational expression you need to find at which points numerator is equal to zero. In this case, we have the product of three expressions.

A product is equal to zero whenever one of the factors is equal to zero. 
That means that zeros of our functions are:
1)

2)


3)


The final answer is a. Function has zeros at (0, 1, -11).
 
        
        
        
Answer: Complementary angles. x = 60
How I got it.
x - 30 + x = 90
then solve for x
Hope this helps!
 
        
             
        
        
        
Answer:   24
Step-by-step explanation:
 
        
                    
             
        
        
        
Hope these help:
#9 
a-4 divided by 5 = 12
5*12 is 60 
60+4 is 64 
60 (final answer for a)
#10
n+3 divided by 8 = -4
8*(-4) =  -32
-32 + 3 = -35
 -32 (final answer for n)
#11
6+z divided by 10 = -2
-2 * 10 = -20
-20=6=-26
-20 (final answer for z)
btw, can't see diagram
        
             
        
        
        
I think the answer is negative 8 square root 726 
then the answer if I am right sorry if I am not would be negative 88 square root 6
again sorry if wrong