Evaluate the expression.
A. 
B. 
C. 
D. 
Answer: B
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Use the pH scale to solve the problem. Negative ions, designated by the notation [OH-] are always present in any acid or base. The concentration, [OH-], of these ions is related to [H+] by the equation [OH-] ? [H+] = 10-14 moles per liter. Find the concentrations of [OH-] and [H+] in moles per liter for the substance with the following pH value. Round to two decimal places. pH = 7.3
A. [H+] = 5.01 × 10-8 [OH-] = 2.00 × 10-7 B. [H+] = 2.00 × 10-8 [OH-] = 5.01 × 10-8 C. [H+] = 5.01 × 10-6 [OH-] = 2.00 × 10-8 D. [H+] = 2.00 × 10-7 [OH-] = 5.01 × 10-8
Find the slope of the line.
A. -6 B. 6 C. -1 D. 1
Use the discriminant to determine whether the graph of the equation is an ellipse (or circle), a hyperbola, or a parabola.3x2 + 3xy - 9y2 + 4x - 2y + 9 = 0
A. Hyperbola B. Ellipse or circle C. Parabola
Find the total surface area and the volume of the following right prism. (Round to the nearest tenth.)
A. T = 1157 in.2, V = 3490 in.3 B. T = 1057 in.2, V = 1690 in.3 C. T = 520 in.2, V = 1790 in.3 D. T = 520 in.2, V = 1890 in.3