The wages of the employees of a company are presented in this histogram. Answer the question.
How many employees earn at least $4 and less than $6 an hour?
A. 10
B. 20
C. 34
D. 22
Answer: B
Mathematics
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Solve by completing the square to obtain exact solutions.x2 + 4x + 68 = 0
A. -2 ± 2
i
B. -2 ± 8i
C. 6, -10
D. 2 ± 8i
Mathematics
Insert <, >, or = between the given expressions to obtain a true statement.sin 78° 2 sin 8°
A. = B. > C. <
Mathematics
A set of data items is normally distributed with a mean of 60. Determine the z-score for the data point given, if the standard deviation is as given.data item: 47; standard deviation: 13
A. 1 B. 13 C. -13 D. -1
Mathematics
Solve the system of equations.
x + 
y - 
z = -3- 
x - 
y - 
z = 4
style="vertical-align: -17.0px;" />x + 
y + 
z = 17
A. 
B. 
C. 
D. 
Mathematics