Use a graphing calculator to graph the parabola.2.3(y - 0.4)2 = 0.1(x + 3.9)
A. y = 0.4 ± 
B. y = 0.4 ± 
C. y = -0.4 ± 
D. y = -0.4 ± 
Answer: B
Mathematics
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Find the product, AB, if possible.A = 
, B = 
A. AB is not defined.
B. 
C. 
D. 
Mathematics
Find the domain of f(x).f(x) = 
A. {x? x is a real number and x ? 7} B. {x? x is a real number and x ? -4} C. {x? x is a real number and x ? 4} D. {x? x is a real number and x ? -7}
Mathematics
Use the square root property to solve the equation.3x2 + 21 = 0
A. {-i
, i
}
B. {-7i, 7i}
C. {-7, 7}
D. {-
, 
}
Mathematics
Find the indicated matrix.Let A = 
. Find 4A.
A. 
B. 
C. 
D. 
Mathematics