Answer:
Number of statues that can be painted are 17
Step-by-step explanation:
Initially Diana has  liters of paint remaining.
 liters of paint remaining.
Every statue requires  liters of paint for painting.
 liters of paint for painting.
We have to find how many statues we will be able to paint with this remaining paint.
To get the number of statues,
Number of statues = 
number of statues = 
                                =  = 17.5
 = 17.5
Since the number of statues is not an integer the maximum number of statues that can be painted are 17.
 
        
                    
             
        
        
        
Answer:
84
Step-by-step explanation:
A=bh/2. 
A=(21*8)/2
A=168/2
A=84
 
        
                    
             
        
        
        
Answer:
x = pi, 3pi, 5pi  etc
x = -pi, -3pi, -5pi etc
Step-by-step explanation:
 cos^2 x + 2 cos x + 1 = 0
 replace cos x with m
m^2 + 2m +1 = 0
solve by factoring  (this is a^2 +2ab+b^2 = (a+b)^2  where a =m and b=1)
(m+1)^2=0
take the square root of each side
m+1 =0
m=-1
now replace m with cos x
cos x = -1
take arccos  of each side
arccos cos x = arccos (-1)
x = pi, 3pi, 5pi  etc
 
        
             
        
        
        
Answer:
The missing value is 19.
Step-by-step explanation:
The equation is increasing by 2 and 17+2 equals 19.
 
        
             
        
        
        
Multiply everything by 4 so you get rid of the fraction