Answer:
10 seconds
Step-by-step explanation:
I am not exactly sure what the question is, but if you are asking how much time it would take to print 300 copies, you would first set up an equation and solve for x.
450/15 = 300/x
x = 10
There were 24 questions on the test.
Because 18/24= 0.75
Answer:
About 11.299 hours.
Step-by-step explanation:
To solve this problem, you can set up an equation to model the decay of the medicine. Let's call the time that medicine has been in the body x.
![(1-0.0595)^x=0.5](https://tex.z-dn.net/?f=%281-0.0595%29%5Ex%3D0.5)
![0.9405^x=0.5](https://tex.z-dn.net/?f=0.9405%5Ex%3D0.5)
Taking the log x of both sides, you get
![x=\log_{0.9405} 0.5](https://tex.z-dn.net/?f=x%3D%5Clog_%7B0.9405%7D%200.5)
hours. Hope this helps!
The mean is simply the average of the total movies seen so..
![\frac{4 + 14 + 16 + 4 + 20 + 19 + 12 + 10}{2} = mean](https://tex.z-dn.net/?f=%20%5Cfrac%7B4%20%2B%2014%20%2B%2016%20%2B%204%20%2B%2020%20%2B%2019%20%2B%2012%20%2B%2010%7D%7B2%7D%20%3D%20mean)
![\frac{99}{2} = mean](https://tex.z-dn.net/?f=%20%5Cfrac%7B99%7D%7B2%7D%20%3D%20mean)
![49.5 = mean](https://tex.z-dn.net/?f=49.5%20%3D%20mean)
the median is the middle number (or the average of the middle 2 numbers)
so if we line up the numbers in order and cross them out from both ends we get 12 & 14 so we take the average of the 2