Solve.A nuclear cooling tower cross section is a hyperbola having a diameter of 58 ft at the center. The distance between the two foci is 94 ft. What is the equation for the hyperbola?
A. 
- 
= 1
B. 
- 
= 5
C. 
- 
= 1
D. 
- 
= 1
Answer: C
Mathematics
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Design a sine function with the given properties.It has a period of 12 hr with a minimum value of -9 at t = 3 hr and a maximum value of 3 at 
A. 6 sin
+ 3
B. 12 sin
- 3
C. 12 sin
- 9
D. 6 sin
- 3
Mathematics
Solve, rewrite in interval notation, and graph.2 < 6 - x and - 
x ? 1
A. 
B. 
C. 
D. 
Mathematics
Convert the length as indicated. Round the answer to one decimal place.5.1 feet to centimeters (feet ? inches ? centimeters)
A. 155.4 cm B. 13.0 cm C. 129.5 cm D. 200.8 cm
Mathematics
Perform the indicated operations. Simplify the answer.
? 
A. -2i B. -2 C. 2 D. 2i
Mathematics