Complete the solution of the linear inequality by shading the appropriate region.4x + 5y ? 20
A. 
B. 
Answer: A
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Solve the SSA triangle. Indicate whether the given measurements result in no triangle, one triangle, or two triangles. Solve the resulting triangle. Round the answer to the nearest tenth.C = 35°, a = 18.7, c = 16.1
A. No triangle exists. B. Solution 1: A = 103°, B = 42°, b = 27.4 Solution 2: A = 7°, B = 138°, b = 3.4 C. Solution 1: A = 42°, B = 103°, b = 27.4 Solution 2: A = 138°, B = 7°, b = 3.4 D. A = 42°, B = 103°, b = 27.4
Find the perimeter and the area of the figure.
A. perimeter: 12 in.; area: 36 sq in. B. perimeter: 24 in.; area: 36 sq in. C. perimeter: 36 in.; area: 24 sq in. D. perimeter: 24 in.; area: 144 sq in.
Use the pH scale to solve the problem. Use the given concentration [H+] of a substance to calculate the pH value of the substance and classify the substance as an acid or a base. Round to two decimal places.[H+] = 2.1 × 10-4
A. pH ? 6.68, acid B. pH ? 4.32, base C. pH ? 0.84, acid D. pH ? 3.68, acid
Solve the equation. 
= -1.66
A. 1.66 B. -1.66, 1.66 C. -1.66 D. No solution