Answer: Longest tool life is at A-, B+ and C+, for an average predicted life of 552.5. From examination of the cube plot, we see that the low level of cutting speed and the high level of cutting angle gives good results regardless of metal hardness.
A. True. |-2| becomes 2 after simplifying. So |-2| > 1 becomes 2 > 1 which is a true statement.
B. False. |12| = 12 and |-15| = 15, so |12| > |-15| becomes 12 > 15, which is false.
C. False. |-7| = 7, not -7. The result of an absolute value is never negative as it represents distance from zero on a number line.
D. False. |-8| = 8 and |8| = 8. The original inequality |-8| < |8| simplifies to 8 < 8 which is false. Any number is never smaller than itself.
<h3>Answer: Choice A) |-2| > 1</h3>
Your answer would be 11.4
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