Answer:
A = 340 adult. 
C = 398 children.
Step-by-step explanation:
Let the number of children be C
Let the number of adults be A
Translating the word problem into an algebraic equation, we have;
A + C = 738  .......equation 1 
1.5C + 2C = 1306  .......equation 2
A = 738 - C .......equation 3
Substituting eqn 3 into eqn 2, we have;
1.5(738 - C) + 2C = 1306 
1107 - 1.5C + 2C = 1306
1306 - 1107 = 2C - 1.5C
199 = 0.5C
C = 199/0.5
<em>C = 398 children. </em>
Now, to find the value of A. 
From equation 3;
A = 738 - C
A = 738 - 398
<em>A = 340 adult. </em>
 
        
             
        
        
        
Answer:
x = -10; x = 4
Step-by-step explanation:
 
        
             
        
        
            
            
                The mean (rounded to the nearest tenth if needed) of the following data set is: 30, 29, 40, 51, 39, 33, 24, 60, 40, 35, 58 
                bekas [8.4K]             
         
        
Mean is just the average so to calculate the average just add up all the data and divide it by the number of data. 
so it's gonna be 
(30+29+40+51+39+33+24+60+40+35+58) / 11
= 39.9 (corrected to the nearest tenth)