Find the exact value of the expression.sin-1 
A. 
B. 
C. 
D. 
Answer: B
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Express as a sum of logarithms.log6(228 ? 255)
A. log66 + log228228 + log255255 B. log658,140 + log658,140 C. log2286 + log2556 D. log6228 + log6255
Represent the given condition using a single variable, x.The length and width of a rectangle whose width is two times its length.
A. length = x; width = 2x B. length = x; width = x + 2 C. width = x; length = 2x D. width = x; length = x + 2
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 H+ represents the concentration of the hydrogen ions in the solution in moles per liter. Find the pH if the hydrogen ion concentration is 
A. 2 B. -2 C. 12 D. -12
Use algebra to rewrite the integrand; then integrate and simplify.
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E. 