Minus 2 degrees every hour 
there are 4 hours
d=degrees dropped
- 2 x 4 = d
        
                    
             
        
        
        
Answer:
-8-7= 15 
so the answer is 15
Step-by-step explanation:
 
        
             
        
        
        
Answer:
21
Step-by-step explanation:
f(x) =x^2 - 6x + 21
f(xl =0
Answer: 
substitute 0 for x 
f(0) = 0^2 - 6(0) + 21
0. = 0 - 0 + 21
0. = 21
  
        
             
        
        
        
Answer:
m<1 = 105°
m<2 = 75°
very simple explanation:
a and b are perpendicular. line t intersects these perpendicular lines. the given 75° is, in short, an intersect of a line, which is 180°. 75-180=105. angles 1 and 2 are duplicates of what is shown