The 1st one
Well it's the same as normal exponents so you multiply  2/3 x 2/3 x 2/3 x 2/3 x 2/3
 
        
                    
             
        
        
        
The answer is:  " 2 :5 " ;  or, write as:  " 2/5 " . 
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The ratio of 'girls' to 'all students' is:  "2: 5 " ;  or, write as:  " 2/5 ".
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Explanation:
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Given:  The ratio of boys to girls is:  " 3:2 " .  
Problem:  Find the ratio of "girls" to "all students:
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Note:    This ratio of "boys to girls", which is " 3 : 2 " ; 
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    →  can be expressed as " 3x: 2x"  ;  
in which the total number of students is:  " 3x + 2x " = 5x " .
   → The total number of students is represented as:  " 5x " .  
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→  The ratio of "girls to boys" is:  "2x : 3x" .
→  {that is;  the "inverse" of the ratio of "boys to girls"} ;  
→  {that is;  the "inverse" of  " 3x: 2x" } ;  →  which is:  " 2x : 3x " .
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The ratio of "girls" to "all students" is:  "2x : 5x "  ;  or " 2x/5x " ; 
                                             → Both "x" values cancel ;  {since: " x/x = 1 "} ; 
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       →  and we have the answer:  " 2 :5 " ;  or, write as:  " 2/5 " . 
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The ratio of 'girls' to 'all students' is:  " 2 :5 " ;  or, write as:  " 2/5 ".
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Well to find this answer, you want to divide $1.39 by 67.6. When you do this you get 0.0205. This is roughly 2 cents per ounce.
 
        
                    
             
        
        
        
Answer: 3/16
Step-by-step explanation: To multiply fractions, first multiply across the numerators and then multiply across the denominators.
 ×
 ×  = ?
 = ?
15 × 1 = 15
20 × 4 = 80
 can be reduced by dividing both the numerator and denominator by the Greatest Common Factor which is 5.
 can be reduced by dividing both the numerator and denominator by the Greatest Common Factor which is 5.
15 ÷ 5 = 3
80 ÷ 5 = 16
Therefore,  ×
 ×  =
 = 
 
        
             
        
        
        
The answer is 5 using the distance formula