Solve the problem using the strategy of your choice.Three people have telephone prefixes whose three digits have the same sum. One of the prefixes is 448. None of the prefixes contains a digit that is in one of the other prefixes. None of the prefixes has a first digit of 6 or 1. One of the prefixes begins with 5. Another ends with 2. What is the prefix that ends with 2?
A. 372
B. 772
C. 592
D. 962
Answer: B
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Plot the curve of the given polar equation in polar coordinates.r = 6 cos ?
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B. 
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Provide an appropriate response.Find the standard deviation for the scores: 76 59 97 96 88
A. 15.9 B. 7.96 C. 83.2 D. 14.25
For an election with four candidates (A, B, C, and D) we have the following preference schedule:
The ranking of the candidates using the Borda count method is
A. first: A; second: D; third: C; fourth: B. B. first: D; second: A; third: C; fourth: B. C. first: D; second: C; third: A; fourth: B. D. first: A; second: C; third: D; fourth: B. E. none of these
Suppose ABC is a right triangle with sides of lengths a, b, and c and right angle at C. Find the unknown side length using the Pythagorean theorem and then find the value of the indicated trigonometric function of the given angle. Rationalize the denominator if applicable.Find cot A when a = 5 and c = 6.
A. 
B. 
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D. 