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Grade 19 Algebra I
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Real Number Systems -Absolute Value
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Question: Evaluate the expression
| - 7 |.
A ) 0
B ) 1
C ) - 7
D ) 7
Steps to derive
1
If
a
is negative, then |
a
| = -
a
.
[Use definition of opposites.]
2
| - 7 | = - (- 7) = 7
Hence the right answer is Option D
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