Answer:
You find the surface area with:
10*2+10*2+4*2+4*2+2*2+2*2+4*7+4*7+4*4+4*4 or in short 152 in^2.
 
        
                    
             
        
        
        
<span>4.23 times 9 equals 38.07 :)</span>
        
                    
             
        
        
        
Answer:
no solution because the square root of a negative number is not a real number d=-100
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Let x = the age of the youngest child
Let x + 1 = the age of the middle child
Let x + 2 = the age of the oldest child
x + x + 1 + x + 2 = 39
3x + 3 = 39
3x = 36
x = 12 years
 
        
             
        
        
        
Answer:
x=11. 38 degrees; 52 degrees
Step-by-step explanation:
90+6x-14+3x+5=180
81+9x=180
9x=99
x=11
38 degrees, 52 degrees