250 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with mean ? = 75 and standard deviation ? = 10.A score of 60 corresponds to a standardized value of

A. -5.
B. 5.
C. 1.5.
D. -1.5.
E. none of these


Answer: D

Mathematics

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Write the equation for the plane.The plane through the points P(-1, -1, 6) , Q(2, -1, 24) and 

A. 6x - 3y - z = -9 B. 6x - 3y - z = 9 C. 6x + 3y +z = 9 D. 6x + 3y + z = -9

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Translate the algebraic expression to a word phrase.x + 2

Fill in the blank(s) with the appropriate word(s).

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Simplify the expression.

A. -5 B. -5j C. 5 D. 5j

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Solve.Find the distance between (7, 2) and (-5, -5).

A.  
B. 193
C. 84
D.  

Mathematics