Answer:
-(2/5)^3 or -8/125 or -0.064
Step-by-step explanation:
convert the decimal into a fraction 
then use your calculator to find the exact answer
 
        
                    
             
        
        
        
Answer:
60 days.
Step-by-step explanation:
This is  a proportion question. You compare two ratios. Unfortunately it is an inverse ratio.
12 = k/100                   Multiply both sides by 100
1200 = k
20 = k/x                       Multiply both sides by x
20x = k
20x = 1200                 Divide by 20
20x/20 = 1200/20
x = 60 days.   
An inverse proportion works by making a constant k. The  constant k makes the days shorter when the number of people increases. You should expect that. More people , less time.
 
        
             
        
        
        
Answer:
F = -6 + 2d/5
Step-by-step explanation:
2d-5f=30
subract 2D from each side 
-5f=30-2d
divide both sides by -5
f= -6 +2d/5
 
        
                    
             
        
        
        
Answer:
1) b⁵⁴
2) 7⁷
Step-by-step explanation:
When you have an exponent raised to an exponent, like in #1, you simply multiply the exponents. 
When you are dividing two numbers with exponents and they have the same base, like in #2, you subtract the denominator exponent from the numerator exponent.