Use the graph of a quadratic function to find the solution set of the equation or inequality. For a solution set that involves an interval, use interval notation.x2 + 4x + 11 ? 0
A. x = 11
B. (-?, ?)
C. (-?, 11) ? (11, ?)
D. ?
Answer: B
Mathematics
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Use mathematical induction to prove the following.If a is a constant and 0 < a < 1, then an < 1.
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Mathematics
Establish the identity.tan2x = sec2x - sin2x - cos2x
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Mathematics
Find an equation in slope-intercept form (where possible) for the line.Through (-1, 3), perpendicular to -9x + 2y = 15
A. y = 
x - 
B. y = - 
x
C. y = - 
x + 25
D. y = - 
x + 
Mathematics
Solve the problem.The function, S(x) = 
, gives the predicted sales volume of a company, in millions of items, where x is the number of years from now. Determine the predicted sales 6 years from now. Round your answer to two decimals, if necessary.
A. 9.9 million B. 13.27 million C. 23.93 million D. 10.35 million
Mathematics