Find the focus and directrix of the parabola with the given equation.11x2 = 36y
A. Focus: 
, directrix: y = - 
B. Focus: 
, directrix: x = - 
C. Focus: 
, directrix: y = 
D. Focus: 
, directrix: y = - 
Answer: D
Mathematics
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Write the sum in summation notation.
+ 
+ 
+ . . . + 
A. 
B. 
C. 
D. 
Mathematics
Answer the question.Which of the following is NOT listed as a suggestion to follow when preparing for an exam?
A. Reread the sections in the textbook that will be covered on the exam. B. Revisit your homework and the chapter review problems. C. Relax, and work on the exam thoughtfully. D. Test yourself.
Mathematics
Convert to decimal notation.- 
A. -0.19
B. -3.8
C. -1.
D. -1.9
Mathematics
Use the given information to find the exact value of the trigonometric function.sec ? = - 
, ? lies in quadrant II
Find sin 
.
A. 
B. - 
C. 
D. - 
Mathematics