Find the mean. If necessary, round to one decimal place.58, 12, 80, 54, 136, 84

A. 71.2
B. 84.8
C. 70.7
D. 70.2

Answer: C

Mathematics

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Identify the opposite of the number. 18

A.
B. 18
C. -18
D. +18

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Write the equation for the plane.The plane through the point P(3, -7, -3) and parallel to the plane 

A. 3x - 7y - 3z = -17 B. 5x + 2y + 6z = 17 C. 5x + 2y + 6z = -17 D. 2x + 6y + 5z = -17

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Mathematics

Find the acute angle A. Leave answer in decimal degrees rounded to seven decimal places, if necessary.cos A = 0.42515336

A. 295.160371° B. 115.160371° C. 25.160371° D. 64.839629°

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Solve the problem.In one town, 238 of the 1750 people who voted in the last presidential election are Hispanic. What percent is this?

A. 7% B. 0.136% C. 13.6% D. 70%

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Mathematics