Find the value of the expression.-|2.8|
A. -2.8
B. 2.8
C. 0
D. 5.6
Answer: A
Mathematics
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; C is the curve x = (7 - t), y = - 1, z = (7 - t), 0 ? t ? 1
A. 
B. 
C. 
D. 
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The scores on a 30-point multiple-choice exam are given in the following frequency table:
The interquartile range on the exam is
A. 4. B. 2.5. C. 3.5. D. 3. E. none of these
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Use the fundamental identities to simplify the expression.sin ? cos ? sec ? csc ?
A. 1 B. sec2? C. tan2? D. csc2?
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Perform the indicated operations. Subtract -8 - 5x8 + 8x9 - 3x7 + 5x from the sum of 8x7 + 5x - 9 and 5x9 - 3x8.
A. 13x9 - 8x8 + 5x7 - 17 B. 13x9 - 8x8 + 5x7 - 1 C. -3x9 + 2x8 + 11x7 - 1 D. -3x9 - 8x8 + 5x7 - 17
Mathematics