Solve the problem.A nuclear cooling tower cross section is a hyperbola having a diameter of 52 ft at the center. The distance between the two foci is 96 ft. What is the equation for the hyperbola?
A. 
- 
= 1
B. 
- 
= 5
C. 
- 
= 1
D. 
- = 1
Answer: A
Mathematics
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The decibel scale is a logarithmic scale.
Answer the following statement true (T) or false (F)
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Simplify the complex fraction.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Your company uses the quadratic model y = -11x2 + 350x to represent how many units (y) of a new product will be sold (x) weeks after its release . How many units can you expect to sell in week 19?
A. 6859 units B. 6441 units C. 10,621 units D. 2679 units
Mathematics
Solve the problem.In a survey about the number of siblings of college students, the following probability table was constructed: 
What is the probability that a student has 1, 2, or 3 siblings?
A. 0.49 B. 0.31 C. 0.89 D. 0.63
Mathematics