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