There are problems with the first sentence, and it's not really needed when
working with this question. So let's just take the 20 (Hz ?) frequency from
the first sentence, and ignore the rest of it for right now.
Wavelength = (speed) / (frequency) =
(331 m/s) / (20 Hz) = <em>16.55 meters</em>.
<span>1 hour 36 minutes = 1 36/60 = 1 3/5 = 1.6 hours
Speed of car leaving wallace be x mph
Speed of car leaving vernonville will be ( x+10) mph
1.6 ( x + x+10) = 192
2x + 10 = 120
2x = 110
x = 55
ANSWER Wallace car = 55 mph Vernonville = 65mph
Therefore, </span><span>the average speeds of both cars are 55 mph for the Wallace car and 65 mph for the Vernonville.
I hope my answer has come to your help. Thank you for posting your question here in Brainly.</span>
Answer:
they better come prepared
Explanation:
they Gonna get coronavirus