Find the mean for the given sample data.Bill kept track of the number of hours he spent exercising each week. The results for four months are shown below. Find the mean number of hours Bill spent exercising per week. Round your answer to two decimal places.
A. 7.63 hours
B. 7.23 hours
C. 7.85 hours
D. 8.08 hours
Answer: A
Mathematics
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Solve the initial value problem.
= cos t - sin t, s
= 12
A. s = sin t + cos t + 11 B. s = sin t - cos t + 11 C. s = sin t + cos t + 13 D. s = 2sin t + 10
Mathematics
Simplify completely.
A. 
B. 
C. 
D. 
Mathematics
Use Cramer's rule to solve the system.4x - 3y - 2z = -7 -4y - 4z = -683x - 3z = 3
A. {(9, -9, -8)} B. {(9, 8, 9)} C. {(9, 9, 8)} D. {(10, 7, 8)}
Mathematics
Solve the right triangle for all missing sides and angles to the nearest tenth.
b = 25B = 36°44'
A. A = 53°16', c = 42.1, a = 31.1 B. A = 53°16', c = 41.8, a = 31.2 C. A = 53°16', c = 31.2, a = 41.8 D. A = 53°16', c = 41.8, a = 33.5
Mathematics