Answer:
2.5477 feet
Step-by-step explanation:
Refer the image attached to understand my solution.
BC = height of lamppost.
DE = Julia
AD = shadow of Julia 
BD = 2 feet.      AD = 5 feet
BA = BD + AD
        = 2 + 5 = 7 feet
In ΔABC
tan 20° = 
BC = 7 * tan 20°
BC = 2.5477 feet 
SO the height of lamppost = 2.5477 feet
 
        
             
        
        
        
Answer:
You multiply 5 by the exponents and 4^0 is just 1, so 4^45•1=4^45. Hope this helped!
Step-by-step explanation:
 
        
                    
             
        
        
        
The solution is -5/4= -1 1/4
        
                    
             
        
        
        
His father can drive 25 days without the warning light
        
             
        
        
        
Answer: b=5
Step-by-step explanation:
7(b+2)=49
7b + 14= 49
7b = 49-14
7b= 35
b=35/7
b=5