If A denotes the area of the sector of a circle of radius r formed by the central angle ?, find the missing quantity. If necessary, round the answer to two decimal places.r = 15 inches, ? = 45°, A = ?
A. 11.78 in2
B. 5.89 in2
C. 176.63 in2
D. 88.31 in2
Answer: D
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Solve the initial value problem.
= 20t(5t2 - 1)3, s(1) = -4
A. s = (5t2 - 1)4 - 260
B. s = 
(5t2 - 1)4 - 4
C. s = 
(5t2 - 1)4
D. s = 
(5t2 - 1)4 - 132
Answer the question.What are the domain and range for the equation y = 2x?
A. Domain: (0, ?); range: (-?, ?) B. Domain: (-?, ?); range: (-?, ?) C. Domain: (-?, ?); range: (0, ?) D. (-?, ?); range: [0, ?)
For the measured quantity, state the set of numbers that is most appropriate to describe it. Choose from the natural numbers, integers, and rational numbers.Number of students in various high schools
A. Rational numbers B. Natural numbers C. Integers
Tell whether or not the relation is a function.{(-5, -2), (-2, -2), (3, 1), (3, 8)}
A. No B. Yes