Answer:
Apparent Increase in Wave Frequency
As the ambulance approaches you, the distance between the source of the waves and the observer decreases. Consequently, the siren sounds more shrill as the pitch of the wailing siren 'sounds' higher than its original value, as sound waves reach you 'more frequently'.
Step-by-step explanation
hope this helps
Answer:
80cm3
Step-by-step explanation:
I think that since their is no = sign you can’t have just one nimber because you can’t fully simplify... I got 4c-12
Given:
a.) The price of an item has dropped to $63 today.
b.) Yesterday it was $140.
For us to be able to determine the percentage decrease, we will be using the following formula:
We get,
Original Price = $140
Present Price = $63
Therefore, the decrease of the price in percentage is 55%.
Answer:
I think It is the second one
Step-by-step explanation:
I hope this helps:)
