Solve the problem. Round your answer to 2 decimal places when necessary.In a recent year, there were 45 accidents in commercial aviation among major airlines over 15.0 million flight hours. Find the accident rate in units of accidents per 100,000 flight hours.
A. 3 accidents per 100,000 flight hours
B. 0.30 accidents per 100,000 flight hours
C. 0.45 accidents per 100,000 flight hours
D. 4.5 accidents per 100,000 flight hours
Answer: B
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A. x = 4 B. x = 1 C. x = -4 D. x = -1
Find the circumference if 
. Round approximate answer to two decimal places.
?
?
A. 7.54 m B. 15.08 m C. 12.06 m D. 17.74 m E. 18.10 m
Solve the triangle. Round side lengths and angle measures to the nearest tenth when necessary. 
A. a ? 7.3, B ? 7.8°, C ? 142.2° B. a ? 8.3, B ? 2.8°, C ? 147.2° C. a ? 8.3, B ? 6.9°, C ? 143.1° D. a ? 7.3, B ? 7.8°, C ? 37.8°
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