Question

6. A sound wave has frequency of 2 kHz and
wavelength of 35 cm. If an observer is
1.4 km away from the source. At what
time interval could the observer hear the
sound?
(b) 20s
(d) 45
(a) 2
(c) 0.58​

Answer 1

Answer:

c

Step-by-step explanation:

3/4(7x-1)-(2x-1x/2)=X+3/2a²+b²=25 and ab=12 find a+b and a-ba²+b²=25 and ab=12 find a+b and a-b3/4(7x-1)-(2x-1x/2)=X+3/2