Select the correct answer. An audiometer is a machine that tests a person's hearing by producing tones across the speech spectrum. During a hearing test, an audiometer
produces a pure tone with a frequency of 2,000 hertz (cycles/second).
The given function represents the change in pressure, Plt), in millipascals, relative to the normal air pressure in the room as a function of time, t
in seconds, after the pure tone is produced.
p(t) = 2sin(4,000 7t)
What is the change in air pressure when the pure tone is produced?
OA 2 millipascals
ОВ. .
0 millipascals
OC. 1 millipascals
OD.
- 2 millipascals

Asquare parking lot has 6,400 square meters what is the length in meters

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.

Will possibly give brainliest and a high rating. choose the linear inequality that describes the graph. the gray area represents the shaded region. 4x + y > 4 4x – y ≥ 4 4x + y < 4 4x + y ≥ 4