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
They created ratios so people could get information.
The fraction 5/8 is a fraction between 1/2 and 3/4. Its decimal form is 0.625
-3/4
To calculate slope, use the formula
Slope (m) = y2 - y1/x2 - x1
Then choose two points on the line of the graph (as shown in attached file)
Input the values as read from the graph and solve for slope using the graph
Note that the discrepancy in answer is due to the assumption made, no value was given on the graph.
Answer: part a : 3(14a-8b)
Step-by-step explanation: part a : you add 9a and 5 a since they have the same varible then you add 6b and 2b to get 8b which gets you your first answer of 3(14a-8b)
