Find the exact value of the real number y.y = arccos

A.
B.
C.
D. -

Answer: B

Mathematics

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Find the volume. Round results to the nearest tenth if necessary.A pyramid with a height of 11 m and a rectangular base measuring 8 m by 13 m.

A. 39,658.7 m3 B. 381.3 m3 C. 1144 m3 D. 1197.4 m3

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Mathematics

Solve.Given that loga6 = 0.778, and loga5 = 0.699, find loga62.

A. 1.556 B. 0.605 C. 0.544 D. 1.477

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Mathematics

Write the expression as a sum, difference, or multiple of logarithms.log3

A. 5 log₃x + 2 log₃y - log₃z -  log₃w
B. 10 log₃xy -  log₃wz
C. 7 log₃xy -  log₃wz
D. log₃x⁵ + log₃y² - log₃z - log₃w^4/5

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Mathematics

Solve.An express train travels 275 miles between two cities. During the first of a trip, the train traveled through mountainous terrain. The train traveled per hour slower through mountainous terrain than through level terrain. If the total time to travel between the cities was 5 hours, find the speed of the train on level terrain.

A. 63 mph B. 43 mph C. 83 mph D. 23 mph

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Mathematics