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djkk1367
22.11.2019 •
Mathematics
Show that each number is a rational number by writing it as the quotient of two integers.
-4/6
8 1/9
3.87
2/15
Solved
Show answers
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Ответ:
Reflective
Symmetric
Transitive
Step-by-step explanation:
A is reflexive: Since the relation is based on the sum of characters in a string, s=s, so sAs.
A is symmetric: Suppose s and t are strings. if sAt, then s and t have the same sum of their characters, so tAs.
A is transitive: Suppose s,t and r are strings. if sAt, and tAr, then since s and t have the same sum, and t and r have the same sum, s and r have the same sum. So sAr.