Answer:
B
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:The eight angles will together form four pairs of corresponding angles. Angles 1 and 5 constitutes one of the pairs. Corresponding angles are congruent. All angles that have the same position with regards to the parallel lines and the transversal are corresponding pairs e.g. 3 + 7, 4 + 8 and 2 + 6.
Step-by-step explanation:
 
        
             
        
        
        
Answer:
I(7)   =  22.96 W/m²
Step-by-step explanation:
Let intensity of light, be  I(d)   where d is distance. There must be a proportionality factor K such as 
I(d)  = K /d²
Now for d = 5 m    I(d)  =  K* 1/d²
then  45 * 25 = K
K =  1125
To find the intensity when the distance from the light bulb is 7 m away
I(7)   =  K / 49
I(7)   =  1125/49   W/m²
I(7)   =  22.96 W/m²
 
        
             
        
        
        
Answer:
t=2Q-sr/r
Step-by-step explanation:
We are to make t the subject of formula from the given question
Q=r/2 (s+t)
Q=Sr+tr/2
Cross multiply
2Q=Sr+tr
2Q-sr=tr
t=2Q-sr/r