Sketch the graph.A wave produced by a simple sound has the equation 
, where P dynes per square centimeter is the difference between the atmospheric pressure and the air pressure at the eardrum at t sec. Graph for 
.
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Multiply.
?
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Simplify and add or subtract wherever possible.
+ 
- 
A. 15
B. 15
C. 205
D. -280
Mathematics
Convert the length as indicated. Round the answer to one decimal place.2.4 feet to centimeters (feet ? inches ? centimeters)
A. 73.2 cm B. 6.1 cm C. 61.0 cm D. 94.5 cm
Mathematics
Insert ? or ? in the blank to make the statement true.{9, 10, 11} 
{0, 9, 10, 11, 12, 13}
A. ? B. ?
Mathematics