Answer:
90 cubic inches
Step-by-step explanation:
V = 1/3 · area of base · height
V = 1/3 · 18 · 15
V = 6 · 15
V = 90
 
        
             
        
        
        
Answer:
k= -9
Step-by-step explanation:
2k-3=9k+63-3     [expand the 9(k+7) first] 
2k-9k=63-3+3     [put the like terms together]
-7k=63                 [do the simple math]
k= 63 ÷ by -7
k=-9  
 
        
                    
             
        
        
        
Answer:
yes
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
25b * (3a² - 1) = 25b * 3a² - 25b * 1
                      = 75ba² - 25b
Distributive law upon subtraction:
a(x - y) = ax - ay
 
        
                    
             
        
        
        
Answer:
42
Step-by-step explanation:
6*8=48
3*2=6
48-6=42