To solve this system using a matrix equation, which of the following matrices would be multiplied by the column matrix of the constants to solve for the variables?
?
? ?
A. 
B. 
C. 
D. 
E. 
Answer: A
Mathematics
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Write an equation of the line.
A. y = - 
x
B. y = - 
x
C. y = 
x
D. y = 
x
Mathematics
Find the real solutions, if any, of the equation. Use the quadratic formula.x2 - 4x - 7 = 0
A. {-2 + 
, -2 - 
}
B. {2 + 
, 2 - 
}
C. {2 + 
, 2 - 
}
D. {4 + 
, 4 - 
}
Mathematics
Graph the function and then find the specified limit. When necessary, state that the limit does not exist.f(x) = 
; 
f(x) 
A. 
f(x) = 2
B. 
f(x) does not exist
C. 
f(x) = 2
D. 
f(x) = 3
Mathematics
Multiply to find the exact answer. Express the answer as a whole or mixed number when possible and simplify.2
? 23
A. 61
B. 60
C. 51
D. 46
Mathematics