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KeeliGrace
KeeliGrace KeeliGrace
  • 28-05-2014
  • Mathematics
Answered

Which conjunction or disjunction is equivalent to |t – 7| > 12?
A.

t – 7 > 12 or t – 7 < –12
B.

t – 7 < 12 and t – 7 > –12
C.

t – 7 < 12 or t – 7 > –12
D.

t – 7 > 12 and t – 7 < –12

Verified Answer :

kate200468
kate200468 kate200468
  • 28-05-2014

\(|t-7| > 12\ \ \ \Leftrightarrow\ \ \ (t-7>12\ \ \ \ \ or\ \ \ \ \ -(t-7)>12)\ /\cdot (-1)\\\\.\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ t-7>12\ \ \ \ \ or\ \ \ \ \ \ \ \ \ \ \ t-7<-12\\\\Ans.\ A\)

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