True or false?A person who scored at the eightieth percentile in a test answered eighty percent of the questions correctly.
A. True
B. False
Answer: B
Mathematics
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The graph of 
is given in the figure. State whether 
or 
A. a > 0 B. a < 0
Mathematics
For the complex number, state the real part, the imaginary part, and identify the number as real, pure imaginary, or nonreal complex.-7 - 3i
A. Real part: -7; Imaginary part: -3; Nonreal complex B. Real part: -7 - 3; Imaginary part: 0; Real C. Real part: 0; Imaginary part: -7 - 3; Nonreal complex D. Real part: -7 - 3; Imaginary part: 1; Nonreal complex
Mathematics
Simplify. Assume that all variables represent positive real numbers.9
- 5x
A. 14
B. 4x
C. 9
- 5x
D. 4x
Mathematics
Find the center and radius of the circle.(x + 4)2 + (y - 5)2 = 81
A. (4, -5), r = 81 B. (-5, 4), r = 81 C. (-4, 5), r = 9 D. (5, -4), r = 9
Mathematics