1/3 is equivalent to 2/6 
If you know (2) goes into both, 2 and 6, you can divide 2 into the top and bottom number and get 1/3
        
             
        
        
        
Answer:
4
Step-by-step explanation:
2.5+1 1/2
Change the fraction to a decimal
2.5 + 1.5
4
 
        
             
        
        
        
Change the 15 1/3 to an improper fraction (46/3). Next multiply this by (3/4).
(46/3)(3/4) = 46/4 = 23/2 = 11.5 gallons was used to water the plants
15 1/3 - 11 1/2 = 46/3 - 23/2 = 92/6 - 69/6 = 23/6 = 3 5/6 gallons of water are left in the barrel
        
             
        
        
        
Answer:
54
Step-by-step explanation:
 
        
             
        
        
        
Answer:
0.67 cm/s
Step-by-step explanation:
The area of a square is given by :
 ....(1)
 ....(1)
Where
x is the side of a square

Differentiating equation (1) wrt t.

When A = 81cm², the side of the square, x = 9 cm
Put all the values,

So, the length of the side of a square is changing at the rate of 0.67 cm/s.