Determine whether the following is a probability model.
A. Yes
B. No
Answer: B
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Find the exact value of the expression.cos 
sin 
- cos 
sin 
A. 
B. 
C. 
D. 1
An expression that occurs in calculus is given. Factor completely.3(x + 5)2(2x - 1)2 + 4(x + 5)3(2x - 1)
A. (x + 5)2(10x + 17) B. (x + 5)2(2x - 1)(x + 17) C. (x + 5)2(2x - 1)(10x + 17) D. (x + 5)(2x - 1)(10x + 17)
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. 3.98 × 10-4 B. 3.98 × 10-5 C. 2.51 × 10-4 D. 2.51 × 10-5
Find the function value using a calculator set in RADIAN mode. Round the answer to four decimal places, where approximate.sec 0.47
A. 1.1216 B. 0.5080 C. 0.8916 D. 0.4529