Without using a calculator, give the exact trigonometric function value with rational denominator.cot 45°
A. 
B. 
C. 1
D. 
Answer: C
Mathematics
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Use the information below to determine the cardinality of the set. U = {x | x ? N and x ? 12} A = {x | x ? N and 6 < x < 12} B = {x | x ? N and x is even and x < 12}n(A ? B)
A. 12 B. 2 C. 3 D. 8
Mathematics
Provide an appropriate response.Use the strategy of writing equations to justify that if y = 2x and z = y + 5, then z is greater than x.
What will be an ideal response?
Mathematics
Find the indicated value of the given function. f(x) = 
, f(-3)
A. - 
B. 
C. - 
D. 
Mathematics
Solve the problem.The equation V = -3,000t + 24,000 describes the value in dollars of a certain model of car after it is t years old. If a car is worth $15,000, find the age of the car.
A. 4 years B. 5 years C. 3 years D. 2 years
Mathematics