Solve the problem.Find a positive value of k such that the equation x2 + kx + 9 = 0 has a repeated real solution.
A. 7
B. 6
C. 4
D. 5
Answer: B
Mathematics
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Evaluate the integral.
dx
A. 
x - 8 ln
+ C
B. x + 8 ln
+ C
C. x - 8 ln
+ C
D. x + 8 ln
+ C
Mathematics
Evaluate using the correct order of operation.
÷ 
× 
A. 
B. 
C. 
D. 
Mathematics
Use a calculator to find the following. Round your answer to four places past the decimal point. ? sec 47.9° ?
A. 1.5806 B. 1.4246 C. 1.4916 D. 1.6366 E. 1.3686
Mathematics
Solve the problem.Given that P(A) = 0.15, P(B) = 0.42, and P(A ? B) = 0.10, find P(A ? B).
A. 0.47 B. 0.57 C. 0.37 D. 0.67
Mathematics