(Smallest to biggest) 0.3, 0.4, 1/2, 60%, 3/4 
Turning all number to decimals 
.3, .4, .5, .60, .75
        
             
        
        
        
Answer:
4.) 12ft 
Step-by-step explanation:
You solve the area of a square using the following equation: 
Area of a square = <em>s</em>²
Plug in 144 for Area of a square: 
144 = s²
Isolate the variable, s. Root both sides of the equation. 
√144 = √s²
s = √144 = √(12 * 12) = 12
4.) 12ft is your answer. 
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The  fraction of the total books about mammals is 7/18
Let the total number of books in the school be 1 whole , ie 12/12( since we are dealing with fractions)
 Number of science books =7/12
Number of mammals books =2/3 of science books
=2/3  x 7/12=14/36 = 7/18
 Since the total books are 12/12 which is also =1 whole 
 Then the fraction of total books that are about mammals are 7/18 x 1 whole =7/18
See related answer here: brainly.com/question/18443368
 
        
             
        
        
        
Answer: 
I don't know either
Step-by-step explanation: