Simplify the expression.
?
?
A. 
B. ?
C. 
D. 
Answer: D
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Solve the absolute value equation. 
= 0
A. no solution
B. x = - 
, 
C. x = - 
D. x = - 
Solve the system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.
A. x = 2, y = 3, z = -6, w = 7; (2, 3, -6, 7) B. x = 3, y = 1, z = -2, w = 5; (3, 1, -2, 5) C. x = 3 + w, y = 1 - 2w, z = -2 + 2w, where w is any real number D. x = 5, y = 21, z = -14, w = -2; (5, 21, -14, -2)
For the resistor shown below, find the upper and the lower limit in ohms, ?.
A. 1,116,500 ?, 763,500 ? B. 1,198,000 ?, 682,000 ? C. 1,093,000 ?, 787,000 ? D. 1,128,000 ?, 752,000 ? E. 1,093,000 ?, 763,500 ?
Estimate the product by rounding as indicated.(14)(76); Round each factor to one nonzero digit.
A. 8 B. 80 C. 800 D. 1600