Choose the appropriate sketch for the indicated geometric object.Right angle ?XYZ

A.

X?Y?Z

B.

C.

D.

Answer: D

Mathematics

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Use the range rule of thumb to approximate the standard deviation.The maximum value of a distribution is 12.6 and the minimum value is 4.3. Round results to the nearest tenth.

A. 7.1 B. 2.1 C. -0.9 D. 10.7

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Provide an appropriate response.True or false? i = -1

A. True B. False

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Find the sum.9 + (-9)

A. 9 B. 18 C. -9 D. 0

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Find all solutions of the equation. Express the solution in radians.cos x = - 

A.  + 2n? or  + 2n?
B.  + 2n? or  + 2n?
C.  + 2n? or  + 2n?
D.  + 2n? or  + 2n?

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Mathematics