Simplify the radical expression. Assume all variables represent positive real numbers.
A. 19
B. 7
C. ±7
D. 49
Answer: B
Mathematics
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Solve the problem.Find the maximum value of 
subject to 
.
A. 2 B. 1 C. 10 D. 4
Mathematics
Tell whether the statement is true or false.Every integer is an irrational number.
A. True B. False
Mathematics
Solve the system. If the system has infinitely many solutions, write the solution set with x arbitrary.3x + 2y + z = 42x - 3y - z = 55x + 12y + 5z = 2
A. {(x, -5x - 9, -13x + 22)} B. {(x, -5x + 9, -13x + 22)} C. {(x, 5x + 9, -13x + 22)} D. {(x, 5x - 9, -13x + 22)}
Mathematics
Use the product rule to simplify the expression. Assume that the variables can be any real number.
A. 4xy2
B. 4x
C. 4x2
D. 4xy
Mathematics