Perform the indicated operations. Simplify, if possible. +  - 

A.  
B.  
C.  
D.


Answer: C

Mathematics

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Identify the equation as either an identity or not.2 cos 5x sin x = sin 6x + sin 4x

A. Not an identity B. Identity

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Solve the problem.The pitch P of a musical tone is inversely proportional to its wavelength W. One tone has a pitch of 206 vibrations per second and a wavelength of 13.1 ft. Find the wavelength of another tone that has a pitch of 348 vibrations per second. Round to the nearest tenth.

A. 5472.4 ft B. 0.000183 ft C. 0.13 ft D. 7.8 ft

Mathematics

Establish the identity.  = 

What will be an ideal response?

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The graph below shows the percentage of students enrolled in the College of Engineering at State University. Use the graph to answer the question.Approximate the year that 12% of students were enrolled.

A. 1975 B. 1965 C. 1970 D. 1980

Mathematics