Write the augmented matrix for the system of linear equations.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Graph each system of inequalities and shade the portion of the graph represented by the solution set..
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression.
A. -49 B. 49 C. 7 D. -7
Mathematics
According to data released by a city's Chamber of Commerce, the weekly wages (in dollars) of female factory workers are normally distributed with a mean of 470 and a standard deviation of 40. Find the probability that a female factory worker selected at random from the city has a weekly wage of $450 to $550. Round your answer to four decimal places. ?
A. 0.103 B. 0.2224 C. 0.3842 D. 0.6687 E. 0.5754
Mathematics
Graph.y = 2x2 - 3x - 9
A. 
B. 
C. 
D. 
Mathematics