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Answer is 13°F
Step-by-step explanation:
Time taken to reach a person located 5m from the source is 0.2s
<u>Explanation:</u>
Given:
Frequency, f = 10Hz
Wavelength, λ = 2.5m
Distance, d = 5m
Time, t = ?
We know:
velocity = f X λ
v = 10 X 2.5
v = 25 m/s
We know:
Distance = speed X time
On substituting the value we get:
5 = 25 X t
t = 0.2 seconds
Therefore, time taken to reach a person located 5m from the source is 0.2s
we are given
point-A= -7
point-B=8
(a)
opposite of point-A is negative of point-A value
so,
opposite of point-A is -(-7)
opposite of point-A is 7
opposite of point-B is negative of point-B value
so,
opposite of point-B is -8
opposite of point-B is -8
(b)
we can see that
opposite of point-A is 7
opposite of point-B is -8
they are not equal
so, this argument is FALSE.......Answer
The answer is YES because of the triple negative and double negative