Solve the inequality and graph the solution set.| x | > 5
A. (-5, ?)
B. (-5, 5)
C. (-?, -5) ? (5, ?)
D. (5, ?)
Answer: C
Mathematics
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The hydrogen ion concentration of a solution is 2.5 × 10-6 mol/L [H+]. What is the pH of this solution?
A. -6 B. 5.6 C. 2.5 D. 6
Mathematics
Convert the improper fraction into a mixed number.- 
A. -37
B. -1
C. -36
D. 6
Mathematics
Perform the operation indicated.
÷ (x + 7)
A. -1
B. -(x - 7)(x + 7)
C. - 
D. - 
Mathematics
Determine which of the following methods is the best choice for solving the given equation: factoring, using the principle of square roots or using the quadratic formula. Then, solve the equation.x2 - 9 = 0
A. Quadratic formula; -3 + i
B. Square root principle or factoring; ±3
C. Square root principle or factoring; 3
D. Factoring; 0, 3
Mathematics