Answer:
On average, the scores of Class B are lower than Class A.
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Step-by-step explanation:
x=-2 is equal to -x=2
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2n-7+12n-9
combined like terms 2n+12n and -7-9
your answer is 14n-16
Answer:
the set containing all objects or elements and of which all other sets are subsets.
Step-by-step explanation: