Answer: 45000
Step-by-step explanation:
From the question, we are informed that Patty buys a new car and gets it appraised every few years and that after owning the car for 3 years, its value is $15,000 and further told that after owning the car for 5 years, its value is $9,000.
Let the number of years be x
Let the value of the car be y.
From the first part of the question, we are told that after owning the car for 3 years, its value is $15,000.
Since an inverse variation will be:
x = k/y
3 = k/15000
k = 15000 × 3
k = 45000
Let's confirm the value of k for the second part of the question. After owning the car for 5 years, its value is $9,000. Here, x=5 and y = 9000
x = k/y
x = 45000/9000
x = 5
It's correct.
Therefore, the constant of proportionality is 45000
Answer:
(2x10)=40
Step-by-step explanation:
Answer each ticket cost $7.50
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Remember that moving on the x axis is 1 and on the y axis 2
Answer:
<em>The loudness of the dinner conversation is 40 dB</em>
<em></em>
Step-by-step explanation:
Loudness in dB = 10
![(\frac{I}{I_{o} })](https://tex.z-dn.net/?f=%28%5Cfrac%7BI%7D%7BI_%7Bo%7D%20%7D%29)
where
is the least intense sound a human can hear =
W/m^2
For a dinner conversation with sound intensity of
=
W/m^2
Loudness = 10
= 10
= <em>40 dB</em>