Find the mean of the set of data. Round to the nearest tenth.117, 39, 68, 68, 39, 117, 12, 12, 12, 117, 12, 12, 68

A. 53.3
B. 51.4
C. 52.1
D. 56.8


Answer: A

Mathematics

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Answer the question.The numbers ? and ? + ? determine the points A and B, respectively, on the unit circle. How are the points A and B related?

A. A and B are the same point. B. B is the reflection of A through the origin. C. B is the reflection of A about the x-axis. D. B is the reflection of A about the y-axis.

Mathematics

Determine whether the equation is linear. If it is linear, give values for a and b so that the equation can be written in the form ax + b = 0.45.4x = 4.1

A. Yes; a = -4.1, b = 45.4 B. Yes; a = 45.4, b = 4.1 C. No D. Yes; a = 45.4, b = -4.1

Mathematics

Decide whether the relation defines a function.2x + 4y > 2

A. Not a function B. Function

Mathematics

Simplify.-

A. -50 B. -5 C. -15 D. -25

Mathematics