Solve the problem.The average daily temperature T of a city in the United States is approximated by T = 55 - 23 cos 
(t -30)where t is in days, 1 ? t ? 365, and t = 1 corresponds to January 1. Find the period of T.
Fill in the blank(s) with the appropriate word(s).
365 days
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Answer the question.The average annual precipitation in Tewinville is 60 inches. In 2000, a particularly wet year, the precipitation was 120 inches. Which of the following statements are correct? More than one statement may be correct.A: In 2000, the precipitation was 200% of normal.B: In 2000, the precipitation was 100% of normal.C: In 2000, the precipitation was 200% above normal.D: In 2000, the precipitation was 100% above normal.
A. B and C B. A and C C. B and D D. A and D
Use the theoretical probability formula to solve the problem. Express the probability as a fraction reduced to lowest terms.A die is rolled. The set of equally likely outcomes is {1, 2, 3, 4, 5, 6}. Find the probability of getting a 3.
A. 
B. 0
C. 3
D. 
Find the exact circumference of the circle.
A. 1.8?2 ft B. 1.8? ft C. 3.6?2 ft D. 3.6? ft
Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.-4x - 4y - 4z = -4-12x - 11y - 10z = -9-8x - 7y - 6z = -5
A. (-2, 6, 0) B. (-2, 3, 0) C. (z - 2, -2z + 3, z) D. No solution