Solve the problem.What is the probability that at least 2 students in a class of 36 have the same birthday?
A. 0.832
B. 0.814
C. 0.799
D. 0.849
Answer: A
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Write the expression in terms of sines and/or cosines, and then simplify.
A. sin x B. cos x C. csc x D. sec x
Solve the problem.Maggie bought 112 plants from the nursery, and she wants to plant 5 rows, each having 23 plants. However, after she starts placing the plants, she finds that she does not have enough. By how many did she fall short?
A. 4 B. 3 C. None D. 5
Use the properties of the trigonometric functions to find the exact value of the expression. Do not use a calculator.sec2 20° - tan2 20°
A. 2 B. 1 C. -1 D. 0
Solve the problem.Suppose that the population of a certain city during a certain time period can be modeled with the function, P(x) = -0.1x5 + 3.4x4 + 5000, where x is time in years since 1960. By sketching a graph of P(x), estimate during what time period the population of the city was increasing.
A. Between 1960 and 1974 B. Between 1965 and 1987 C. Between 1987 and 1994 D. Between 1960 and 1987