Answer:
angle 2 = 90° {corresponding angles}
angle 7 + angle 5 = 180° {linear pair}
or, angle 7 + 100° = 180° {angle 5 is corresponding to 100°}
so, angle 7 = 80°
 
        
             
        
        
        
Answer:
y+1 = 4(x+3)
Step-by-step explanation:
To write the equation of a line use the point slope form by substituting m = 4 and the point (-3,-1).

 
        
             
        
        
        
Answer:
y = (1/2) cos (x)
Step-by-step explanation:
It has the same period as cos x but only goes half as high and half as low. Normalyy, cos(x) goes up to 1 and down to -1.
 
        
             
        
        
        
Answer:
   g(-5) = 15
Step-by-step explanation:
Put the value where the variable is and do the arithmetic.
   g(-5) = -2(-5) +5 = 10 +5
   g(-5) = 15