Provide an appropriate response.
Use the sine function to find angle A of a standard right triangle ABC given a = 3.4 mm and c = 8.3 mm. Round to the nearest 0.1°.
A. 0.4°
B. 22.3°
C. 24.2°
D. 65.8°
Answer: C
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Graph the inequality.y ? 3x + 4
A. 
B. 
C. 
D. 
Solve. Round results to the nearest thousandth.x2 + 10x - 31 = 0
A. 10.174, -20.174 B. 2.483, -12.483 C. 20.174, -10.174 D. 12.483, -2.483
Solve the problem.The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by 
where x represents the concentration of the hydrogen ions in the solution in moles per liter. Find the hydrogen ion concentration if the 
A. 10-13 B. 0.08 C. 2.56 D. 1013
The graphs show the sales of two companies competing for market share.
If x represents Company B's sales in 2007 and y represents Company A's sales in the same year, then the relationship between x and y is
A. x = y B. x < y C. x > y