we can use formula

where
fL is listener frequency
fs is siren frequency
va is the speed of sound in air
vs is police car speed
so, we have



now, we can change it into m/s


now, we can plug it

..............Answer
The probability that twenty customers will visiting Target stores will be 0.0007979.
<h3>How to calculate the probability?</h3>
Your information is incomplete but the question will be solved based on the available information.
The probability an individual visiting Target purchases something is 0.70. Therefore, the probability that 20 customers visit will be:
= 0.70^20
= 0.0007979
Learn more about probability on:
brainly.com/question/24756209
#SPJ1
Answer:
0.06
Step-by-step explanation:
6/100 is 0.06
Pythagora: 20^2=(4x)^2+(3x^2)
400=16x^2+9x^2
x^2=400/25
x^2=16
x=4
Answer:
bbrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrreeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
Step-by-step explanation: