First find the least common denominator (8), and then subtract. After subtracting you should get 31/8, which as a decimal is 3.875 and as a mixed number is 3 7/8.
        
             
        
        
        
Answer:
Yes. Explanation: 120%=1.2. If Maxine is correct, then she spent 1.2 times the hours she did homework than last week. 15⋅1.2=18.0=18.
Yes Explanation: 120
 
        
             
        
        
        
Answer:
2x(2x²+x+1)
Dtep-by-step explanation:
f(x) = 9x³+2x²-5x+4
g(x) = 5x³-7x+4
f(x) - g(x)
= 9x³+2x²-5x+4 - (5x³-7x+4)
= 9x³+2x²-5x+4-5x³+7x-5
= 4x³+2x²+2x
= 2x(2x²+x+1)
 
        
             
        
        
        
I think 0? Correct me if I’m wrong
 
        
        
        
Answer:
   x = 64 m
Step-by-step explanation:
The scale is proportional to the actual:
   (6 m)/(3/4 cm) = x/(8 cm)
Multiplying by 8 cm, we get ...
   x = (8 cm)·(6 m)/(3/4 cm)
   x = 64 m . . . . the width of the actual wall