Find the term that should be added to the expression to form a perfect square trinomial. Write the resulting perfect square trinomial in factored form.x2 - 
x
A. 
; 
2
B. - 
x; 
2
C. 25; 
2
D. 
; 
2
Answer: A
Mathematics
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Use the vertical line test to determine whether or not the graph is a graph in which y is a function of x.
A. not a function B. function
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Solve the equation for the specified variable.P = 
for t
A. t = 
B. t = P - rA
C. t = 
D. t = 
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Find the solution set of the linear system. Identify inconsistent systems and dependent equations. For dependent equations, write your answer as an ordered triple in terms of z.
A. {(-5, 2, -1)} B. {(-1, 2, -5)} C. {(2, -5, -1)} D. {(-5, -1, 2)}
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Find the equation y = ?0 + ?1x of the least-squares line that best fits the given data points.Data points: (2, 1), (3, 2), (7, 3), (8, 1)X = 
, y = 
A. y = - 
+ 
x
B. y = 
+ 
x
C. y = 
- 
x
D. y = - 
+ 
x
Mathematics