Remark
This is an arithmetic progression. You have the first and last terms and the difference.
Givens
a = - 18
L = 60
d = 4.5        
Equation
L = a + (n - 1)d
Solve
60 = -18 + (n - 1) * 4.5   Add 18 to both side
60 + 18 = (n - 1) * 4.5      
78 = (n - 1) * 4.5           Divide both sides by 4.5
78/4.5 = n - 1
17.3333 = n - 1             Add 1 to both  sides.
18.3333 = n
Conclusion
It will that 18 1/3 or 18.33333 minutes to get the from -18 to 60 degrees.
 
        
             
        
        
        
Rotating Q 180 degrees using the center P has the same effect as reflecting Q over the Line M
Step-by-step explanation:
Rotating Q 180 degrees using the center P has the same effect as reflecting Q over the Line M and this is because Lines L and M are perpendicular lines ( i.e. lines that meet a right angle ( 90° ).
Hence rotating Q 180 degrees form the center will be similar to reflecting Q over any of the perpendicular lines
        
             
        
        
        
Answer:
   sin(π/8) = (1/2)√(2-√2)
Step-by-step explanation:
Using the half-angle formula ...
   
We can let θ = π/4 and simplify the result as follows:
   
 
        
                    
             
        
        
        
Answer:
1.a
2.b
Step-by-step explanation:
The first column is the domain, while the second column is the range. Therefore, 1 is a, and 2 is b. Hope this helps!