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, , 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. What is the change in air pressure when the pure tone is produced?

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify

answer:   (s+1)(s+4)

step-by-step explanation:

factor s2+5s+4

s2+5s+4

=(s+1)(s+4)

answer: 4  

the square root of 16 is 4. it is a very simple mathematic concept. a square root when a number multiplied by itself will result in a number. here, the number 16 comes when 4 is multiplied by 4. hence the square root of 16 is 4. you can always figure out a square root by the inverse operation of squaring.  

the best estimate is 3 because   8 can only go into 24 3 times