Evaluate the expression for the given replacement values.x - y
for x = -13, y = -1
A. 12
B. -14
C. 14
D. -12
Answer: D
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Determine whether the following is always true or not always true. Given reasons for your answers.(u × v) ? w = u ? (w × v)
What will be an ideal response?
Use the determinant feature of a graphing calculator to solve the system by Cramer's rule . (Round to one decimal place.)1.5x - 0.3y - 4.8z = -1.45.4x - 7.0y + 1.7z = -5.04.8x - 1.7y + 0.7z = 11.0
A. {(6.8, 7.2, 2.3)} B. {(13.6, 14.5, 4.5)} C. {(3.4, 3.6, 1.1)} D. {(27.3, 28.9, 9.0)}
Solve the problem.During the first four months of the year, Jack earned 
and 
If Jack must have an average salary of at least 
in order to earn retirement benefits, what must Jack earn in the fifth month in order to qualify
for benefits? A. at least $950 B. at most $1020 C. at least $1370 D. at most $933
Solve the equation by completing the square.x2 + 3x - 9 = 0
A. 
B. 
C. {-3 ± 3
}
D. 