The scores on a 30-point multiple-choice exam are given in the following frequency table:
What is the mean score on the exam?
A. 26.5
B. 25
C. 26
D. 25.5
Answer: C
Mathematics
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Find the absolute value.|-21|
A. 21 B. ± 21 C. -21 D. 0
Mathematics
Find all solutions of the equation in the interval [0, 2?).
csc
- 2 = 0
A. 
B. 
C. 
D. 
Mathematics
Solve.x2 + y2 = 113x + y = 15
A. (8, -7), (7, -8) B. (-8, -7), (-7, -8) C. (-8, 7), (-7, 8) D. (8, 7), (7, 8)
Mathematics
Write the standard form of the equation of the circle.Center (-9, 0), r = 12
A. (x - 9)2 + y2 = 144 B. x2 + (y - 9)2 = 12 C. x2 + (y + 9)2 = 12 D. (x + 9)2 + y2 = 144
Mathematics