Solve the problem.The parabola x2 = -20y is shifted 4 units up and 7 units to the left. Find the focus and directrix of the new parabola.
A. Focus: (-7, 9); Directrix: y = 9
B. Focus: (-7, -1); Directrix: y = 9
C. Focus: (7, -9); Directrix: y = -9
D. Focus: (-7, -1); Directrix: y = -1
Answer: B
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Tessellate the plane with the figure(s) shown.
What will be an ideal response?
Solve the problem.A technician has readings that take 1
minutes each to read and record. How many readings can be completed in 84 minutes?
A. 112 readings B. 63 readings C. 29 readings D. 9 readings
Perform the indicated operation.
(Round to the nearest hundredths when necessary.)
A. 2.79 B. 0.23 C. 2.29 D. 0.28
Provide an appropriate response.Suppose the time (in minutes) applicants must wait to receive a driver's examination is uniformly distributed with density function f(x) = 
where 0 ? x ? 40 and f(x) = 0 elsewhere. What is the probability that an applicant must wait more than 35 minutes?
Fill in the blank(s) with the appropriate word(s).