Solve the problem.If two sound sources at the same volume are equidistant from a microphone, the pressure on the microphone is given by p = a cos ?1t + a cos ?2twhere a, ?1, ?2 are constants and t is time. Write p as a product of cosine functions.
What will be an ideal response?
p = 2a cos (
t) cos (
t)
Mathematics
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Graph.x2 - y2 = 8
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.After a person stops pedaling a bicycle, the wheel rotates 470 times the first minute. Each subsequent minute, it rotates 3/4 as many times as in the previous minute. How many times will the wheel rotate before coming to a complete stop?
A. 1880 rotations B. 3760 rotations C. 626.7 rotations D. 3290 rotations
Mathematics
Perform the indicated operation and write the answer in lowest terms.
+ 
A. 
B. 
C. 
D. 
Mathematics
Find the perimeter of the geometric figure.
A. 30k2 + 22x B. 15k2 + 11x C. 15k2 + 2x + 9 D. 30k2 + 4x + 18
Mathematics