Answer:
6
Step-by-step explanation:
450/75= 6 hours
6,272,640 square inches = 1 acre
10^6 square inches = 10^6/6,272,640 = 0.16 acre
0.16 acre = $12.50
2 acre = (2 x 12.50)/0.16 = $156.25
The cost coverifng 2 acres of land is $156.75
Answer:
c. 60.9%
Step-by-step explanation:
Given:
The probability P that a person responds to an advertisement can be modeled by the function:
![P=1-e^{-0.047t}](https://tex.z-dn.net/?f=P%3D1-e%5E%7B-0.047t%7D)
where
represents number of days since the advertisement first appeared.
To find the probability that a person has responded after 20 days.
Solution:
In order to find the probability that a person has responded after 20 days, we will plugin
in the formula given.
We have:
![P(t)=1-e^{-0.047t}](https://tex.z-dn.net/?f=P%28t%29%3D1-e%5E%7B-0.047t%7D)
Plugging in ![t=20](https://tex.z-dn.net/?f=t%3D20)
![P(20)=1-e^{-0.047(20)}](https://tex.z-dn.net/?f=P%2820%29%3D1-e%5E%7B-0.047%2820%29%7D)
![P=1-e^{-0.94}](https://tex.z-dn.net/?f=P%3D1-e%5E%7B-0.94%7D)
![P=1-e^{-0.047t}](https://tex.z-dn.net/?f=P%3D1-e%5E%7B-0.047t%7D)
![P=1-0.3906](https://tex.z-dn.net/?f=P%3D1-0.3906)
![P=0.6094](https://tex.z-dn.net/?f=P%3D0.6094)
Thus, probability
after 20 days = 0.6094
The probability in percentage can be given =
= 60.9%
Answer: 4
Step-by-step explanation:
I got it right when i did my math