Answer:
144°
Step-by-step explanation:
step 1
Find the measure of the central angle of the regular pentagon
Divide 360 degrees by 5 (the number of sides)

Let
c----> the center of the pentagon
we know that
m∠ECA=72°
m∠ACB=72°
therefore
m∠ECB=m∠ECA+m∠ACB
substitute the values
m∠ECB=72°+72°=144°
The measure of angle ECB is equal to the degrees that the pentagon rotate
 
        
             
        
        
        
1700 that is due in 14 days with a fee of 100$ because it’s a shorter time period
        
                    
             
        
        
        
       5p - 3q = -39
-     (-2p - 3q = 3)
==> 7p = -42 ==> p = -6
==> p = -6
      -2(-6) - 3q = 3 ==> 12 - 3q = 3 
==>p = -6
     -3q = 3 - 12 ==> -3q = -9
==> p = -6
       q = 3