The price of a video game was reduced from $70.00 to $40.00. By what percentage of the price was was the videogame reduced? Just
2 answers:
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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